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Türkiye’deki önemli bitki alanları tehdit altında

11 bin tür bitkiye ev sahipliği yapan Anadolu, zenginliğiyle, tropikal kuşaktaki ülkelerle yarışıyor. Ancak, Türkiye’deki 122 önemli bitki alanından 114’ünün (yüzde 94’ü) tehdit altında olduğu belirlendi. Tehdidin en önemli nedenleri ise yoğun zirai faaliyetler, plansız yapılaşma, ormancılık çalışmaları, tarım alanlarının genişletilmesi ve sulak alanların kurutulması olarak sıralandı. Bilim adamlarının on yıldır konuyla ilgili olarak sürdürdüğü...

http://www.biyologlar.com/turkiyedeki-onemli-bitki-alanlari-tehdit-altinda

Cells are crawling all over our bodies, but how?

Cells are crawling all over our bodies, but how?

For better and for worse, human health depends on a cell's motility –– the ability to crawl from place to place. In every human body, millions of cells –are crawling around doing mostly good deeds ––– though if any of those crawlers are cancerous, watch out.

http://www.biyologlar.com/cells-are-crawling-all-over-our-bodies-but-how

Bird genomes contain 'fossils' of parasites that now infect humans

Bird genomes contain 'fossils' of parasites that now infect humans

The researchers found DNA 'fossils' of parasitic nematodes in seven groups of birds (clockwise): trogons, mesites, parrots, hummingbirds, hornbills, manakins, tinamous. In rare instances, DNA is known to have jumped from one species to another. If a parasite's DNA jumps to its host's genome, it could leave evidence of that parasitic interaction that could be found millions of years later -- a DNA 'fossil' of sorts. An international research team led from Uppsala University has discovered a new...

http://www.biyologlar.com/bird-genomes-contain-aposfossils-apos-of-parasites-that-now-infect-humans-haber-8710

UW team stores digital images in DNA -- and retrieves them perfectly

UW team stores digital images in DNA -- and retrieves them perfectly

Technology companies routinely build sprawling data centers to store all the baby pictures, financial transactions, funny cat videos and email messages its users hoard. But a new technique developed by University of Washington and Microsoft researchers could shrink the space needed to store digital data that today would fill a Walmart supercenter down to the size of a sugar cube. The team of computer scientists and electrical engineers has detailed one of the first complete systems to encode,...

http://www.biyologlar.com/uw-team-stores-digital-images-in-dna-and-retrieves-them-perfectly-haber-8723

Monterey Körfezin’de bir asır sonra yeniden bulunan canlı

Monterey Körfezin’de bir asır sonra yeniden bulunan canlı

Bilim adamları, 1900 yılında ilk kez tarif edildiğinden beri kesin olarak görülemeyen garip ve zor bulunan bir yaratığın bulgularını doğruladılar.

http://www.biyologlar.com/monterey-korfezinde-bir-asir-sonra-yeniden-bulunan-canli

Amerikalı Bilim Adamları, İnsanlarda Kalıcı Gen Düzenlenmesini Destekliyor

Amerikalı Bilim Adamları, İnsanlarda Kalıcı Gen Düzenlenmesini Destekliyor

Tartışmalı bir adımla, ABD'li üst düzey bilimsel bir komite, sonraki nesiller tarafından miras alınacak olan insan embriyosuna yapılacak genetik değişimleri içeren en tartışmalı genom düzenleme biçimlerinden birine yeşil ışık yaktı.

http://www.biyologlar.com/amerikali-bilim-adamlari-insanlarda-kalici-gen-duzenlenmesini-destekliyor

Biyoinformatik

"Biyoinformatik, biyolojik bilgilerin yaratılması ve saklanması için veritabanlarının oluşturulmasıdır. Bu konudaki çalışmaların çoğu biyolojik verilerin analizi ile ilgilidir. Artan sayıdaki projelerde biyolojik bilgilerin organizasyonu gerekmektedir. Bu alanda oluşturulan veritabanlarının büyük bir kısmını nükleik asitler oluşturmaktadır. Milyonlarca nükleotidin depolanması ve organizasyonu için veritabanlarının oluşturulması, araştırıcıların bu...

http://www.biyologlar.com/biyoinformatik-1

Study documents catastrophic collapse of Sahara's wildlife

Study documents catastrophic collapse of Sahara's wildlife

A new study led by the Wildlife Conservation Society and Zoological Society or London warns that the world's largest tropical desert, the Sahara, has suffered a catastrophic collapse of its wildlife populations. The study by more than 40 authors representing 28 scientific organizations assessed 14 desert species and found that a shocking half of those are regionally extinct or confined to one percent or less of their historical range. A chronic lack of studies across the region due to past and...

http://www.biyologlar.com/study-documents-catastrophic-collapse-of-saharas-wildlife

KÖK HÜCRELERE BAKIŞ:TANIMLAR, KAVRAMLAR ve SINIFLANDIRMALAR

KÖK HÜCRELERE BAKIŞ:TANIMLAR, KAVRAMLAR ve SINIFLANDIRMALAR

İki binli yıllarla beraber kök hücrelerin rejeneratif tıp (yenileyici tıp) alanındaki öneminin giderek arttığını ve tıbbın geleceğini şekillendirme potansiyelini gözlemlemekteyiz.

http://www.biyologlar.com/kok-hucrelere-bakistanimlar-kavramlar-ve-siniflandirmalar

Laboratuvarda Donör Organ Üretimi Gerçekleştirildi

Laboratuvarda Donör Organ Üretimi Gerçekleştirildi

Bir domuz embriyosuna, gelişiminin ilk safhalarında insan hücreleri enjekte edildi ve dört haftadır gelişimini sürdürüyor. Fotoğraf: Juan Carlos Izpisua Belmonte

http://www.biyologlar.com/laboratuvarda-donor-organ-uretimi-gerceklestirildi

Kloroplast’ın Kökeni

Kloroplast’ın Kökeni

Bristol Üniversitesi liderliğindeki yeni bir araştırma. Kloroplastın ilk geliştiği kökenine, zamanlama ve yaşam alanına ışık tuttu. Gösel: Patricia Sanchez-Baracaldo

http://www.biyologlar.com/kloroplastin-kokeni

Neden Taze Sebze ve Meyve Yemeliyiz?

Neden Taze Sebze ve Meyve Yemeliyiz?

Taze sebze ve meyvelerin denizciler, kaşifler ve üniversite öğrencileri için önemi

http://www.biyologlar.com/neden-taze-sebze-ve-meyve-yemeliyiz

Coral reefs in Palau surprisingly resistant to naturally acidified waters

Coral reefs in Palau surprisingly resistant to naturally acidified waters

Ocean researchers working on the coral reefs of Palau in 2011 and 2012 made two unexpected discoveries that could provide insight into corals' resistance and resilience to ocean acidification, and aid in the creation of a plan to protect them. The team collected water samples at nine points along a transect that stretched from the open ocean, across the barrier reef, into the lagoon and then into the bays and inlets around the Rock Islands of Palau, in the western Pacific Ocean. With each...

http://www.biyologlar.com/coral-reefs-in-palau-surprisingly-resistant-to-naturally-acidified-waters

Improving the delivery of chemotherapy with graphene

Improving the delivery of chemotherapy with graphene

A new study published in IOP Publishing's journal 2D Materials has proposed using graphene as an alternative coating for catheters to improve the delivery of chemotherapy drugs. The research suggests that placing graphene - an extremely thin sheet of carbon atoms - on the internal surfaces of intravenous catheters commonly used to deliver chemotherapy drugs into a patient's body will improve the efficacy of treatments, and reduce the potential of the catheters breaking. The study indicates...

http://www.biyologlar.com/improving-the-delivery-of-chemotherapy-with-graphene

Farklı Çeşitteki Patojenleri Tanıma Rehberi

Farklı Çeşitteki Patojenleri Tanıma Rehberi

Protozoa olan Giardia, giardiyaz adı verilen ishal hastalığına sebep olur. Giardia türleri serbest yaşayan (flamotin aracılığıyla) trofozitler ve yumurta şeklindeki kistler olarak bulunur.

http://www.biyologlar.com/farkli-cesitteki-patojenleri-tanima-rehberi

BİYOTEKNOLOJİK ÜRÜNLER, ORGANİK ÜRÜNLER VE ULUSLARARASI TİCARETTEKİ GELİŞMELER

Modern biyoteknoloji ifadesi, genel olarak, modern bilgi ve tekniklerin uygulanması ile yapılan, genetik mühendisliğine dayalı tekniklerle gerçekleştirilen biyoteknolojiyi tanımlamakta kullanılmaktadır. Günümüzde özellikle tarım ve eczacılık sanayi alanlarında, modern biyoteknoloji yöntemleri kullanılarak çeşitli özelliklere sahip yeni canlı türleri elde etmek mümkün hale gelmiş, bu şekilde üretilen tarım ürünleri ve bunları içeren işlenmiş ürünler ile...

http://www.biyologlar.com/biyoteknolojik-urunler-organik-urunler-ve-uluslararasi-ticaretteki-gelismeler

DENİZ KAPLUMBAĞALARININ KORUMA STATÜLERİ

Deniz kaplumbağalarının korunmalarına ve nesillerini devam ettirebilmelerine yönelik birtakım uluslararası antlaşmalar yapılmıştır. Bu antlaşmalar halen günümüzde yürürlükte bulunmaktadır. Ülkemizde de deniz kaplumbağaları yasalarla ve imzalanan uluslararası antlaşmalarla koruma altına alınmıştır. » BERN Konvansiyonu (Avrupa’nın Yaban Hayatı ve Yaşama Ortamlarının Korunması Sözleşmesi): Avrupa’nın Yaban Hayatı ve Yaşama Ortamlarının Korunması...

http://www.biyologlar.com/deniz-kaplumbagalarinin-koruma-statuleri

New discovery in living cell signaling

New discovery in living cell signaling

A breakthrough discovery into how living cells process and respond to chemical information could help advance the development of treatments for a large number of cancers and other cellular disorders that have been resistant to therapy. An international collaboration of researchers, led by scientists with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley, have unlocked the secret behind the activation of the...

http://www.biyologlar.com/new-discovery-in-living-cell-signaling

One of the last strongholds for Western chimpanzees

One of the last strongholds for Western chimpanzees

When Liberia enters the news it is usually in the context of civil war, economic crisis, poverty or a disease outbreak such as the recent emergence of Ebola in West Africa. Liberia's status as a biodiversity hotspot and the fact that it is home to some of the last viable and threatened wildlife populations in West Africa has received little media attention in the past. This is partly because the many years of violent conflict in Liberia, from 1989 to 1997 and from 2002 to 2003, thwarted efforts...

http://www.biyologlar.com/one-of-the-last-strongholds-for-western-chimpanzees

Surprising global species shake-up discovered

Surprising global species shake-up discovered

The diversity of the world's life forms — from corals to carnivores — is under assault. Decades of scientific studies document the fraying of ecosystems and a grim tally of species extinctions due to destroyed habitat, pollution, climate change, invasives and overharvesting. Which makes a recent report in the journal Science rather surprising. Nick Gotelli, a professor at the University of Vermont, with colleagues from Saint Andrews University, Scotland, and the University of Maine,...

http://www.biyologlar.com/surprising-global-species-shake-up-discovered

New stem cells go back further

New stem cells go back further

One of the obstacles to employing human embryonic stem cells for medical use lies in their very promise: They are born to rapidly differentiate into other cell types.

http://www.biyologlar.com/new-stem-cells-go-back-further

Rethinking the reef

Rethinking the reef

A new study by biologists at San Diego State University and Scripps Institution of Oceanography shows that inhabited coral islands that engage in commercial fishing dramatically alter their nearby reef ecosystems, disturbing the microbes, corals, algae and fish that call the reef home. The study's lead author, Linda Wegley Kelly, is a postdoctoral scholar in the lab of SDSU virologist Forest Rohwer. For the study, she looked at seawater samples collected from the surfaces of reefs surrounding...

http://www.biyologlar.com/rethinking-the-reef

Virüsler Hakkında Bilgi

Virüsler Hakkında Bilgi

Virüs, canlı hücreleri enfekte edebilen mikroskopik taneciktir. Virüsler ancak bir konak hücreyi enfekte ederek çoğalabilirler.

http://www.biyologlar.com/virusler-hakkinda-bilgi

<b class=red>National</b> Geographic Live! - People, Plants and Pollinators

National Geographic Live! - People, Plants and Pollinators

  Emerging Explorer Dino Martins says that from long-tongued bees to hawk moths, pollinators are the hidden workers that keep the planet running.

http://www.biyologlar.com/national-geographic-live-people-plants-and-pollinators

Signs of deforestation in Brazil

Signs of deforestation in Brazil

Multiple fires are visible in in this image of the Para and Mato Grosso states of Brazil. Many of these were most likely intentionally set in order to deforest the land. Deforestation is the removal of a forest or stand of trees where the land is thereafter converted to a nonforest use. Examples of deforestation include conversion of forestland to farms, ranches, or urban use. The herringbone-patterned tan lines cutting through the dark green of the Amazon Rainforest in the middle of the image...

http://www.biyologlar.com/signs-of-deforestation-in-brazil

ARITMA TESİSLERİ VE PROTOZOA

Çalışma metodları birbirinden farklı olsa da arıtma tesislerinin tamamı çeşitli protozoon gruplarını barındırır (Çizelge 1). Biyolojik unsurlar organik madde üzerinden beslenerek organik maddenin topaklaşmasını ve çökmesini sağlarlar. Bakteri bu maddelerin sıvı fazdan uzaklaştırılmasında rol alan en etkin organizma grubunu oluştur. Protozoonlar, atık su arıtma sistemlerinde biyolojik parçalanmadan sorumlu bakteriler üzerinden beslendiklerinden dolayı, önceleri...

http://www.biyologlar.com/aritma-tesisleri-ve-protozoa


Long-term changes in dead wood reveal new forest dynamics

Long-term changes in dead wood reveal new forest dynamics

Healthy forest ecosystems need dead wood to provide important habitat for birds and mammals, but there can be too much of a good thing when dead wood fuels severe wildfires. A scientist with the U.S. Forest Service's Pacific Southwest Research Station (PSW) compared historic and recent data from a forest in California's central Sierra Nevada region to determine how logging and fire exclusion have changed the amounts and sizes of dead wood over time. Results were recently published in Forest...

http://www.biyologlar.com/long-term-changes-in-dead-wood-reveal-new-forest-dynamics

New method to grow zebrafish embryonic stem cells can regenerate whole fish

New method to grow zebrafish embryonic stem cells can regenerate whole fish

Zebrafish, a model organism that plays an important role in biological research and the discovery and development of new drugs and cell-based therapies, can form embryonic stem cells (ESCs).

http://www.biyologlar.com/new-method-to-grow-zebrafish-embryonic-stem-cells-can-regenerate-whole-fish

Dipteraların Ekonomik ve Tıbbi Önemleri

Larva ve erginlerinin farklı yaşam alanların uyum sağlamış olmaları nedeniyle her iki dönemde de oldukça farklı tarzlarda faydalı veya zararlı olurlar. Dipterlerin ekonomik önemleri henüz göz önünde bulundurulmamaktadır. Muhtemelen dipterler bu konuda diğer bütün böcek gruplarını geride bırakacak bir öneme sahip olup insan sağlığına ve ekonomiye sinek ve sivrisineklerin verdiği zarar asla düşünülmez. Ancak sivrisineklerin sebep olduğu hastalıklardan sadece...

http://www.biyologlar.com/dipteralarin-ekonomik-ve-tibbi-onemleri

New Science paper calculates magnitude of plastic waste going into the ocean

New Science paper calculates magnitude of plastic waste going into the ocean

A plastic grocery bag cartwheels down the beach until a gust of wind spins it into the ocean. In 192 coastal countries, this scenario plays out over and over again as discarded beverage bottles, food wrappers, toys and other bits of plastic make their way from estuaries, seashores and uncontrolled landfills to settle in the world's seas. How much mismanaged plastic waste is making its way from land to ocean has been a decades-long guessing game. Now, the University of Georgia's Jenna Jambeck...

http://www.biyologlar.com/new-science-paper-calculates-magnitude-of-plastic-waste-going-into-the-ocean

Detecting HIV diagnostic antibodies with DNA nanomachines

Detecting HIV diagnostic antibodies with DNA nanomachines

New research may revolutionize the slow, cumbersome and expensive process of detecting the antibodies that can help with the diagnosis of infectious and auto-immune diseases such as rheumatoid arthritis and HIV. An international team of researchers have designed and synthetized a nanometer-scale DNA "machine" whose customized modifications enable it to recognize a specific target antibody. Their new approach, which they described this month in Angewandte Chemie, promises to support the...

http://www.biyologlar.com/detecting-hiv-diagnostic-antibodies-with-dna-nanomachines

Wisconsin scientists find genetic recipe to turn stem cells to blood

Wisconsin scientists find genetic recipe to turn stem cells to blood

The ability to reliably and safely make in the laboratory all of the different types of cells in human blood is one key step closer to reality.

http://www.biyologlar.com/wisconsin-scientists-find-genetic-recipe-to-turn-stem-cells-to-blood

Virüslerin sınıflandırılması

Fosillerinin olmaması ve virüslerin canlı olup olmadığı tartışmaları nedeniyle taksonomide virüslerin sınıflandırılması sorunlu olmuştur. Biyolojik sınıflandırmadaki üst âlemlerin (domain) içine kolayca yerleştirilemedikleri için sınıfları takım basamağından başlatılmıştır. Ancak, bir üst âlem ismi olarak Acytota adı önerilmiştir. Bu öneriye göre virüsler Bakteria, Arkea ve Eukaryota üst âlemlerine denk bir taksona aittirler. Halen her familya bir...

http://www.biyologlar.com/viruslerin-siniflandirilmasi

Virginia Tech researchers take cue from spider glue in efforts to create new materials

Virginia Tech researchers take cue from spider glue in efforts to create new materials

A taut tug on the line signals the arrival of dinner, and the leggy spider dashes across the web to find a tasty squirming insect. The spider, known as an orb weaver, must perfectly execute this moment, from a lightning-fast reaction to an artfully spun web glistening with sticky glue. This glue -- created when glycoproteins are secreted from a spider's abdomen and interact with the atmosphere -- has been studied for the past 12 years by Brent Opell, a professor of biological sciences in the...

http://www.biyologlar.com/virginia-tech-researchers-take-cue-from-spider-glue-in-efforts-to-create-new-materials

Role of telomeres in plant stem cells discovered

Role of telomeres in plant stem cells discovered

The role played by telomeres in mammalian cells has been known for several years. It is also known that these non-coding DNA sequences, which are found at the ends of the chromosomes, protect them and are necessary to ensure correct cell division.

http://www.biyologlar.com/role-of-telomeres-in-plant-stem-cells-discovered

Wheat disease-resistance gene identified, potential to save billions

Wheat disease-resistance gene identified, potential to save billions

A gene that can prevent some of the most important wheat diseases has been identified--creating the potential to save more than a billion dollars in lost production in Australia alone each year. In a global collaboration including the University of Sydney's Plant Breeding Institute (PBI), the CSIRO, CIMMYT (Mexico), University of Newcastle, Chinese Academy of Sciences and the Norwegian University of Life Sciences, the gene Lr67 has been identified as providing resistance to three of the most...

http://www.biyologlar.com/wheat-disease-resistance-gene-identified-potential-to-save-billions

Functional human liver cells grown in the lab

Functional human liver cells grown in the lab

In new research appearing in the prestigious journal Nature Biotechnology, an international research team led by The Hebrew University of Jerusalem describes a new technique for growing human hepatocytes in the laboratory. This groundbreaking development could help advance a variety of liver-related research and applications, from studying drug toxicity to creating bio-artificial liver support for patients awaiting transplantations. The liver is the largest internal organ in the human body,...

http://www.biyologlar.com/functional-human-liver-cells-grown-in-the-lab

PROBİYOTİKLER HAKKINDA BİLGİ

Değişik sebeplerden ileri gelen ve insan sağlığı üzerinde olumsuz etkileri olan farklı oluşumlara karşı uzun yıllardan beri değişik antibiyotikler kullanılmıştır. Antibiyotiklerin belli periyotlarda ve belli dozlardaki kullanımı neticesinde, metabolizmada gözlenen rahatsızlıklar tedavi edilebilmiştir. Ancak zaman içerisinde kullanılan antibiyotik türleri ve bunların tedavideki dozlarının insan metabolizmasında yararlı faaliyetleri olan (özellikle de intestinal...

http://www.biyologlar.com/probiyotikler-hakkinda-bilgi

Closing the case on an ancient archeological mystery

Closing the case on an ancient archeological mystery

Climate change may be responsible for the abrupt collapse of civilization on the fringes of the Tibetan Plateau around 2000 B.C. WSU archaeologist Jade D'Alpoim Guedes and an international team of researchers found that cooling global temperatures at the end of the Holocene Climatic Optimum, a 4,000 year period of warm weather, would have made it impossible for ancient people on the Tibetan Plateau to cultivate millet, their primary food source. Guedes' team's research recently was published...

http://www.biyologlar.com/closing-the-case-on-an-ancient-archeological-mystery

Broad, MIT scientists overcome key CRISPR-Cas9 genome editing hurdle

Broad, MIT scientists overcome key CRISPR-Cas9 genome editing hurdle

Researchers at the Broad Institute of MIT and Harvard and the McGovern Institute for Brain Research at MIT have engineered changes to the revolutionary CRISPR-Cas9 genome editing system that significantly cut down on "off-target" editing errors. The refined technique addresses one of the major technical issues in the use of genome editing. The CRISPR-Cas9 system works by making a precisely targeted modification in a cell's DNA. The protein Cas9 alters the DNA at a location that is specified by...

http://www.biyologlar.com/broad-mit-scientists-overcome-key-crispr-cas9-genome-editing-hurdle

Restoring vision with stem cells

Restoring vision with stem cells

Age-related macular degeneration (AMRD) could be treated by transplanting photoreceptors produced by the directed differentiation of stem cells, thanks to findings published today by Professor Gilbert Bernier of the University of Montreal and its affiliated Maisonneuve-Rosemont Hospital. ARMD is a common eye problem caused by the loss of cones. Bernier's team has developed a highly effective in vitro technique for producing light sensitive retina cells from human embryonic stem cells. "Our...

http://www.biyologlar.com/restoring-vision-with-stem-cells

Brazilian beef industry moves to reduce its destruction of rain forests

Brazilian beef industry moves to reduce its destruction of rain forests

Expansion of cattle pastures has led to the destruction of huge swaths of rain forest in Brazil, home to the world's largest herd of commercial beef cattle. But a new study led by the University of Wisconsin-Madison's Holly Gibbs shows that market-driven "zero deforestation agreements" have dramatically influenced the behavior of ranchers and the slaughterhouses to which they sell. Publishing today [May 12, 2015] in the journal Conservation Letters, the research team - including other...

http://www.biyologlar.com/brazilian-beef-industry-moves-to-reduce-its-destruction-of-rain-forests

Türkiye'nin Önemli Doğal Yaşam Alanlar

Önemli Kuş Alanı - ÖKA nedir? Sağlıklı ve kapsamlı bir çevre koruma stratejisi; türlerin, alanların ve habitatların korunmasını ele alır. BirdLife International tarafından geliştirilmiş, uluslararası Önemli Kuş Alanları (ÖKA) yaklaşımı; kuş zenginliğinin, dolayısıyla biyolojik çeşitliliğin korunması açısından öncelik taşıyan bölgeler hakkında gerekli temel bilgileri sağlamak yoluyla, alanların korunmasını destekler. Kuşların yaşamları boyunca...

http://www.biyologlar.com/turkiyenin-onemli-dogal-yasam-alanlar

Bering Sea hotspot for corals and sponges

Bering Sea hotspot for corals and sponges

North of the Aleutian Islands, submarine canyons in the cold waters of the eastern Bering Sea contain a highly productive "green belt" that is home to deep-water corals as well as a plethora of fish and marine mammals. Situated along the continental slope, the area also supports a thriving -- but potentially environmentally damaging -- bottom-trawling fishing industry that uses large weighted nets dragged across the seafloor to scoop up everything in their path. A new study, conducted by...

http://www.biyologlar.com/bering-sea-hotspot-for-corals-and-sponges

Lab experiments question popular measure of ancient ocean temperatures

Lab experiments question popular measure of ancient ocean temperatures

Understanding the planet's history is crucial if we are to predict its future. While some records are preserved in ice cores or tree rings, other records of the climate's ancient past are buried deep in the seafloor. An increasingly popular method to deduce historic sea surface temperatures uses sediment-entombed bodies of marine archaea, one of Earth's most ancient and resilient creatures, as a 150-million-year record of ocean temperatures. While other measures have gaps, this one is...

http://www.biyologlar.com/lab-experiments-question-popular-measure-of-ancient-ocean-temperatures

Discovery of an embryonic switch for cancer stem cell generation

Discovery of an embryonic switch for cancer stem cell generation

An international team of scientists, headed by researchers at UC San Diego School of Medicine and UC San Diego Moores Cancer Center, report that decreases in a specific group of proteins trigger changes in the cancer microenvironment that accelerate growth and development of therapy-resistant cancer stem cells (CSCs). The discovery suggests the basis for a potential new therapeutic approach to eradicate blood cancers, which affect more than 1.1 million Americans. In fact, researchers found...

http://www.biyologlar.com/discovery-of-an-embryonic-switch-for-cancer-stem-cell-generation

Forensic botany uses plant DNA to trace crimes

Forensic botany uses plant DNA to trace crimes

Sam Houston State University is advancing the field of forensic botany with the publication of two recent studies that use marijuana DNA to link drug supplies and pollen DNA to aid in forensic investigations. In an article published in the International Journal of Legal Medicine, faculty and students from the Department of Forensic Science report that they developed a test to individualize samples of marijuana that could be used to link drugs across cases. The study examined 11 cases...

http://www.biyologlar.com/forensic-botany-uses-plant-dna-to-trace-crimes

12th INTER<b class=red>NATIONAL</b> CONGRESS ON THE ZOOGEOGRAPHY AND ECOLOGY OF GREECE AND ADJACENT REGIONS (12. Uluslararası Zoocoğrafya ve Ekoloji Kongresi )

12th INTERNATIONAL CONGRESS ON THE ZOOGEOGRAPHY AND ECOLOGY OF GREECE AND ADJACENT REGIONS (12. Uluslararası Zoocoğrafya ve Ekoloji Kongresi )

Dear Colleagues, It is a great honour for the Organizing Committee, to invite any professional or student who shares our mutual interest in Zoology to the 12th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions to be held in Athens, Greece, from June 18 to 22, 2012. The congress' scope includes all issues related to the animal systematics, ecology, phylogeny, phylogeography, and population genetics in Southeastern Europe and the eastern Mediterranean region....

http://www.biyologlar.com/12th-international-congress-on-the-zoogeography-and-ecology-of-greece-and-adjacent-regions-12-uluslararasi-zoocografya-ve-ekoloji-kongresi-

New GTEx findings show how DNA differences influence gene activity, disease susceptibility

New GTEx findings show how DNA differences influence gene activity, disease susceptibility

Researchers funded by the National Institutes of Health Genotype-Tissue Expression (GTEx) project have created a new and much-anticipated data resource to help establish how differences in an individual's genomic make-up can affect gene activity and contribute to disease. The new resource will enable scientists to examine the underlying genomics of many different human tissues and cells at the same time, and promises to open new avenues to the study and understanding of human biology. GTEx...

http://www.biyologlar.com/new-gtex-findings-show-how-dna-differences-influence-gene-activity-disease-susceptibility

 
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