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Tag: "start" at biology news

Scientists discover stem cell origin of neck and shoulders

... hundreds of millions of year researchers can also start to map cell territories into fossils. For the firs...ayers in forming the neck and the shoulders we can start looking for the genes that are on in these stem cells and which are ultimately responsible for evolu...

More animals join the learning circle

...e conclusive because the process was observed from start to finish. Some researchers have suggested that many purported examples of cultural transmission can instead be explained by individuals discovering the skill on their own rather than following another's lead. But because the gull-baiting behaviour ...

Most common lung cancers may begin in newly discovered cells

...n non-small lung cell cancers. In mice, the tumors start deep in the lung, past the trachea and the branche...fect a tumor suppressor gene or oncogene, it could start the process of forming a tumor. There are certainly suggestions that various tumors might arise in l...

Bacteria are key to 'green' plastics, drugs

...rom the lab to the marketplace this month with the start of industrial scale-up efforts in Kansas. These efforts resulted from an $80,000 award from the Small Business Innovation Research (SBIR) program of the U.S. Department of Agriculture. Bennett and San are working with Manhattan, Kansas-based AgRenew ...

'Jumping genes' contribute to the uniqueness of individual brains

...in neurons. We think that's because when the cells start to differentiate the cells start to open up genes and expose their DNA to insertions," explains co- author Alysson R. Muotri. "What w...

AIDS expert says global strategy needed to combat feminization of HIV/AIDS

...st majority of those living with HIV/AIDS. At the start of the pandemic in the early 1980s, men accounted for almost 90 percent of cases in developed countries. In the United States from 1999 to 2003, the yearly increase in AIDS cases rose by 15 percent, but only by 1 percent in men. He says that now AID...

MERIS monitoring tracks planetary photosynthesis levels

...rowing volume of Earth Observation data. Since the start of this year the Earth Science Grid-On-Demand service has been available to registered users. It allows access to a large amount of data and the swift performance of a wide variety of data processing. ...

Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections

...ulture labeled with red quantum dots. Click on the start button to see how much the protein fades compared with the quantum dots over a period of 10 minutes. By comparison, the new quantum dot method takes one to two hours and is even more sensitive than real time PCR. "It can detect the presence of RSV w...

Sleeping beauty plays a significant role in identifying cancer genes

...ttack the pathways that are required for cancer to start and continue growing." The next step for Largaespada, Jenkins, Copeland and their colleagues will be to generate and analyze a large number of other tumors induced in mice using the Sleeping Beauty jumping gene. Largaespada and his team will focus o...

Why do aneurysms form? New studies suggest leading role for white blood cells

...protein that lets neutrophils attach to tissue and start the "first aid" process. The researchers exposed a small part of the rodent aortas to a chemical that breaks down blood vessel tissue, then studied what happened in the rodents that had altered neutrophil systems and in comparison rodents that were n...

Once given 'no respect,' cells' tiny RNAS take driver's seat

... for by genes' DNA, just like other RNA, microRNAs start out more than 1,000 building blocks long. Because they are able to fold back on themselves, they form double-stranded RNA, rather than the single strand characteristic of messenger RNA. As a result, the cell breaks the RNA into pieces. All sections e...

Modification of program enables prediction of gene transcription

... predict the very beginnings of gene transcription start sites and where the first splice occurs thereby de...rogram available at finding both the transcription start site (TSS) and the complete first exon in both the human and fruit fly genomes. The addition of N-S...

From a Few Wild Ancestors, a Citrus Cornucopia

...aining the essential genetic information needed to start new citrus plants. The citrus genebank -- a University of California-Riverside (UCR) resource that is used cooperatively by the ARS repository -- has been gathering accessions for almost a century. Right now its holdings number about 900 specimens, ...

Columbia scientists develop cancer terminator viruses

... us significantly closer to this objective and the start of clinical trials with these viral-based therapies in cancer patients. Both papers were led by Paul B. Fisher, M.Ph., Ph.D., professor of clinical pathology and the Michael and Stella Chernow Urological Cancer Research Scientist at Columbia Univers...

Identical twins may have more differences than meet the eye

...as they grow older, a new study reports. They may start to look and act less alike. The changes could leave one twin susceptible to diseases like cancer, while the other twin remains healthy. Researchers report in this week's Proceedings of the National Academy of Sciences that these differences may stem...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

...as they grow older, a new study reports. They may start to look and act less alike. The changes could leave one twin susceptible to diseases like cancer, while the other twin remains healthy. Researchers report in this week's Proceedings of the National Academy of Sciences that these differences may stem...

Variant prion protein causes infection but no symptoms

...he cell membrane--may be unable to signal cells to start the lethal disease process, according to scientists at the Rocky Mountain Laboratories (RML), part of the National Institute of Allergy and Infectious Diseases (NIAID) of the National Institutes of Health. "This work provides novel insights into how...

Skull study sheds light on dinosaur diversity

...skeleton in 2001, sauropod specialists finally can start piecing together a clearer picture of the dinosaurs' lives. One feature of the skulls is particularly intriguing. "They have elongate, sort of horse-like skulls with many openings and grooves on the outer surface of their snouts," said Wilson, who ...

India's smoking gun: Dino-killing eruptions

... and the natural changes in Earth's magnetic field start to show up. The team also incorporated information about the lava's chemistry, the way it flowed and piled up and the red weathered soils between lava layers to estimate the timing and number of major volcanic pulses. All that information points to ...

Drugs from the deep blue

...te and identify the molecule. The next step is to start from conventional chemistry and make the compound in the lab, then try to find the simplest structure with the same properties. This work can pull in techniques from different areas of chemistry and biochemistry, but the pathways used to make these p...

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