look 2 3

Tag: "look" at biology news

Genome of yellow fever/dengue fever mosquito sequenced

...netic studies of mosquitoes," Tu said. "If you look at the genome as an ecological system, TEs are different lineages that co-evolve with the rest of the genome" said Tu. "They evolve different relationships with the genome. Some are genetic parasites; they appear to do nothing except replicate within...

Latent memory of cells comes to life

... genetic material - DNA ?is a blueprint for how we look and are. This genetic material is very stable and it is faithfully transmitted to our descendants. Once in a while though, a change occurs to the DNA, either large or small. Such changes are at the origin of the immense and varied animal and plant li...

Growing nerve cells in 3-D dramatically affects gene expression

...g evidence that cells cultured in three dimensions look and behave more like cells in your body," said Diane Hoffman-Kim, the Brown bioengineer who spearheaded the new study, "so culture method is critical. If you want to better understand how the human body behaves or how new drugs might fight disease, 3...

Left-right wiring determined by neural communication in the embryonic worm

...ent; we only know about it because we were able to look at this early period." A similar system of extensive gap junctions appears in the developing mammalian brain, but researchers have yet to figure out exactly what it does. In worms, at least, they now know that it's involved in differentiating the ...

Individuals and populations differ in gene activity levels, not just genes

...ations. However, this study is one of the first to look at the variation in gene activity between individuals and populations. The researchers found many differences in gene-expression levels, and that about 17 percent of those differences were due to population-level differences. The vast majority of...

Get a whiff of this: Smell test could sniff out serious health problems

...He says the Sniff Magnitude Test is also getting a look by researchers at the Rush University Medical Center in Chicago as part of a major epidemiological study on aging, Alzheimer’s disease and sense of smell. ...

Man's best friend lends insight into human evolution

...ability to use social cues cooperatively we should look not just at our closest animal relatives, but also at our best animal friends. While chimps may fail to infer others' mental states when cooperating, domestic dogs do quite well at such tasks. If you point to hidden food, dogs often grasp what you ar...

MIT's ocean model captures diversity of underwater forests

...d Dutkiewicz plan to use this new type of model to look in more detail at what shapes the habitats of the phytoplankton and to link this to other, larger scientific issues about oceans, the plants and creatures living in them and global climate. "This is just the beginning," said Chisholm. "Now we ca...

Corals that can fight global warming may one day help fragile reefs

...eat [of pathogens and warming seas], and we should look to these hardy corals for clues that might enhance others," said Harvell. "Other corals are more sensitive and will not survive the continued warming trend." Yet there seems to be future promise for boosting the immunity of coral reefs, Harvell rep...

Researchers develop marker that identifies energy-producing centers in nerve cells

...'s or Alzheimer's. And, in a general way, we could look into whether there are changes in neuronal mitocho...up with a greenish-yellow glow when the scientists look at the brains of these mice through a fluorescent microscope. The researchers have determined that t...

Study examines genetic risk factors for Alzheimer's disease

... series we are undertaking using new technology to look comprehensively at every gene in the human genome in Alzheimer’s Disease and we hope that there are other exciting findings to come.? There is no known cure or preventative treatment for Alzheimer’s disease, which affects one in 20 people over the ...

Scientists identify pancreatic cancer stem cells

...ave stem cell-like features," Simeone said. To look for cancer stem cells in pancreatic cancer, the research team implanted cancerous tissue from human pancreatic specimens removed during patient surgery in "xenograft" mice with compromised immune systems. Researchers removed tumors after they grew, a...

Stanford-led study closes in on genes that may predispose some people to severe depression

...amination. The second study was a more detailed look at the most suspicious of these regions, located ...dy under way. This phase is an even more detailed look at more than 2,000 individuals to identify specific genes where there are variations that increase...

BMI not accurate indicator of body fat

...nt ?were considered obese," he said. "But when you look at an athlete like that, you see that in many cases he is not obese. Many athletes have huge BMIs because of muscle mass, but in many cases are not fat." The answer, said Pivarnik, is instead of having one cutoff point for everyone, perhaps have d...

Sandia researchers take new approach to studying how cells respond to pathogens

...hogen at the same time," Singh says. "We wanted to look at cells in the same life cycle and same infectious state. This can only be done cell by cell. We also want to study populations, but one cell at a time." The research is possible because of advances in several Sandia-developed tools, including: ...

Paper challenges 1491 Amazonian population theories

...gion. "What we do say is that when you start to look away from known settlements, you may see very long...s is as a sneak peak," he says. "It's a new way to look at landscapes and it's a new tool. The study needs to be replicated in more places before people wil...

Scientists genetically engineer tomatoes with enhanced folate content

...e many more studies to be done--including a better look at how the overall product is affected by this alteration." And there is another hurdle the researchers must clear. Boosting the production of folate in tomatoes involved increasing the level of another chemical in the plant, pteridine. Little is ...

Red flag for repetitive stress injuries identified for first time in humans

...s there were." Future research by the team will look deeper into the potential of biomarkers as indicators of injury and recovery. ...

Changes in amino acids in the 1918 influenza virus cut transmission

...s artificially created in a laboratory and made to look like avian flu. One virus bound to only alpha-2,6, the second bound to both, and the artificially-generated virus bound to only alpha-2,3. The researchers were surprised to discover that the ferrets infected with all three viruses, including the ...

Despite their heft, many dinosaurs had surprisingly tiny genomes

...durable cellular housing allowed the scientists to look back in time at the size of 31 extinct species' genomes: By measuring lacunae in dinosaur and extinct bird specimens housed at Harvard's Museum of Comparative Zoology and at the Museum of the Rockies in Bozeman, Mont., they were able to determine jus...

1 2 3 4 5 6 7 8 9 10