Toplam 24 içerik listeleniyor
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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.
https://www.biyologlar.com/cells-are-crawling-all-over-our-bodies-but-how -
Pancreas stem cell discovery may lead to new diabetes treatments
Stem cells in the adult pancreas have been identified that can be turned into insulin producing cells, a finding that means people with type 1 diabetes might one day be able to regenerate their own insulin-producing cells. The discovery was made by scientists from the Walter and Eliza Hall Institute and provides further evidence that stem cells don't only occur in the embryo. The ability to produce the hormone insulin is crucial for controlling blood sugar (glucose) levels. In people with...
https://www.biyologlar.com/pancreas-stem-cell-discovery-may-lead-to-new-diabetes-treatments -
Scientists reconstruct ancient impact that dwarfs dinosaur-extinction blast
Picture this: A massive asteroid almost as wide as Rhode Island and about three to five times larger than the rock thought to have wiped out the dinosaurs slams into Earth. The collision punches a crater into the planet's crust that's nearly 500 kilometers (about 300 miles) across: greater than the distance from Washington, D.C. to New York City, and up to two and a half times larger in diameter than the hole formed by the dinosaur-killing asteroid. Seismic waves bigger than any recorded...
https://www.biyologlar.com/scientists-reconstruct-ancient-impact-that-dwarfs-dinosaur-extinction-blast -
Simple technology makes CRISPR gene editing cheaper
University of California, Berkeley, researchers have discovered a much cheaper and easier way to target a hot new gene editing tool, CRISPR-Cas9, to cut or label DNA. The CRISPR-Cas9 technique, invented three years ago at UC Berkeley, has taken genomics by storm, with its ability to latch on to a very specific sequence of DNA and cut it, inactivating genes with ease. This has great promise for targeted gene therapy to cure genetic diseases, and for discovering the causes of disease. The...
https://www.biyologlar.com/simple-technology-makes-crispr-gene-editing-cheaper -
Genome-wide search reveals new genes involved in long-term memory
A new study has identified genes involved in long-term memory in the worm as part of research aimed at finding ways to retain cognitive abilities during aging. The study, which was published in the journal Neuron, identified more than 750 genes involved in long-term memory, including many that had not been found previously and that could serve as targets for future research, said senior author Coleen Murphy, an associate professor of molecular biology and the Lewis-Sigler Institute for...
https://www.biyologlar.com/genome-wide-search-reveals-new-genes-involved-in-long-term-memory -
Brain's on-off thirst switch identified
NEW YORK, NY (January 26, 2015)--Neurons that trigger our sense of thirst--and neurons that turn it off--have been identified by Columbia University Medical Center neuroscientists. The paper was published today in the online edition of Nature. For years, researchers have suspected that thirst is regulated by neurons in the subfornical organ (SFO), in the hypothalamus. But it has been difficult to pinpoint exactly which neurons are involved. "When researchers used electrical current to...
https://www.biyologlar.com/brains-on-off-thirst-switch-identified -
Unpacking embryonic pluripotency
Researchers at EMBL's European Bioinformatics Institute (EMBL-EBI) and the Wellcome Trust- Medical Research Council Cambridge Stem Cell Institute at the University of Cambridge have identified factors that spark the formation of pluripotent cells.
https://www.biyologlar.com/unpacking-embryonic-pluripotency -
Why human egg cells don't age well
When egg cells form with an incorrect number of chromosomes--a problem that increases with age--the result is usually a miscarriage or a genetic disease such as Down syndrome. Now, researchers at the RIKEN Center for Developmental Biology in Japan have used a novel imaging technique to pinpoint a significant event that leads to these types of age-related chromosomal errors. Published in Nature Communications, the study shows that as egg cells mature in older women, paired copies of matching...
https://www.biyologlar.com/why-human-egg-cells-dont-age-well -
New DNA research reveals genetic heritage of elusive vaquita
A new method of teasing information from scarce and highly degraded genetic samples is helping NOAA Fisheries and Mexican scientists unravel the genetic heritage of the enigmatic vaquita, the most endangered marine mammal on Earth. Genetic studies are important to the international effort to conserve the vaquita because the DNA that holds their genetic code can unlock the secrets of how they came to be. For instance, it can reveal the story of how - and how long ago - the animals evolved into...
https://www.biyologlar.com/new-dna-research-reveals-genetic-heritage-of-elusive-vaquita -
New DNA research reveals genetic heritage of elusive vaquita
A new method of teasing information from scarce and highly degraded genetic samples is helping NOAA Fisheries and Mexican scientists unravel the genetic heritage of the enigmatic vaquita, the most endangered marine mammal on Earth. Genetic studies are important to the international effort to conserve the vaquita because the DNA that holds their genetic code can unlock the secrets of how they came to be. For instance, it can reveal the story of how - and how long ago - the animals evolved into...
https://www.biyologlar.com/new-dna-research-reveals-genetic-heritage-of-elusive-vaquita -
'Tree of life' for 2.3 million species released
A first draft of the "tree of life" for the roughly 2.3 million named species of animals, plants, fungi and microbes -- from platypuses to puffballs -- has been released. A collaborative effort among eleven institutions, the tree depicts the relationships among living things as they diverged from one another over time, tracing back to the beginning of life on Earth more than 3.5 billion years ago. Tens of thousands of smaller trees have been published over the years for select branches of the...
https://www.biyologlar.com/tree-of-life-for-2-3-million-species-released -
Tracking the viral parasites cruising our waterways
Humans aren't the only ones who like to cruise along the waterways, so do viruses. For the first time, a map of fecal viruses traveling our global waterways has been created using modeling methods to aid in assessing water quality worldwide. "Many countries are at risk of serious public health hazards due to lack of basic sanitation," said Joan Rose, Homer Nowlin Chair in water research at Michigan State University. "With this map, however, we can assess where viruses are being discharged from...
https://www.biyologlar.com/tracking-the-viral-parasites-cruising-our-waterways -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Complex, large-scale genome analysis made easier
The mSet algorithm by Oliver Stegle at EMBL-EBI makes large-scale, complex genome analyses easier.
https://www.biyologlar.com/complex-large-scale-genome-analysis-made-easier -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone -
How do you turn a mosquito's genes on and off?
A microscope image shows a four-segment section of the nervous system of an Aedes aegypti mosquito embryo. The dark purple indicates areas where a gene called "short gastrulation " is being...
https://www.biyologlar.com/how-do-you-turn-a-mosquitos-genes-on-and-off -
How do you turn a mosquito's genes on and off?
A microscope image shows a four-segment section of the nervous system of an Aedes aegypti mosquito embryo. The dark purple indicates areas where a gene called "short gastrulation " is being...
https://www.biyologlar.com/how-do-you-turn-a-mosquitos-genes-on-and-off -
Genomics solutions to the riddle of the tobacco hornworm sphinx moth
Manduca sexta caterpillars can grow up to 10 cm long making them ideal for laboratory experiments to investigate their biochemistry and physiology.
https://www.biyologlar.com/genomics-solutions-to-the-riddle-of-the-tobacco-hornworm-sphinx-moth -
Warbler genomes look to be 99.97 percent alike
This is an illustration of warbler.
https://www.biyologlar.com/warbler-genomes-look-to-be-99-97-percent-alike -
Warbler genomes look to be 99.97 percent alike
This is an illustration of warbler.
https://www.biyologlar.com/warbler-genomes-look-to-be-99-97-percent-alike -
Harvard bilim adamları, insan bilincinin kaynağını saptamış olabileceklerini düşünüyorlar.
Araştırmacılar, bazı hastaların yaralanmalara rağmen neden bilinci koruyabildiğini anlamak için, diğerleri komaya girerken, beyin sapı lezyonları olan 36 hastayı analiz ettiler.
https://www.biyologlar.com/harvard-bilim-adamlari-insan-bilincinin-kaynagini-saptamis-olabileceklerini-dusunuyorlar- -
Harvard bilim adamları, insan bilincinin kaynağını saptamış olabileceklerini düşünüyorlar.
Araştırmacılar, bazı hastaların yaralanmalara rağmen neden bilinci koruyabildiğini anlamak için, diğerleri komaya girerken, beyin sapı lezyonları olan 36 hastayı analiz ettiler.
https://www.biyologlar.com/harvard-bilim-adamlari-insan-bilincinin-kaynagini-saptamis-olabileceklerini-dusunuyorlar-