evidence 2 4

Tag: "evidence" at biology news

Great White shark evolution debate involves WSU Lake Campus geology professor

...In summary, our morphological (form and structure) evidence strongly supports the theory that the Great White is descended from the prehistoric mako group." Ciampaglio said the Great White sharks, which can reach a size of nearly 25 feet and possess two-inch teeth, have been a major research subject of his f...

Fleshing out the genome

...proteins. All told, computational and experimental evidence provided functional information for 256 more genes, or 48 percent, but they could confidently assign exact biochemical functions for only 16 proteins, or 3 percent. Finally, they introduced a seven-category system for annotating genomic proteins, ran...

Molecular models advance the fight against malaria

...t recent drugs on the market, there is significant evidence that malaria parasites are quickly developing resistance to that drug as well. According to WHO estimates, 40% of the world's population are currently at risk of the disease and approximately 2 million people, mostly children, are killed by malaria a...

Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert

...by the rover. Taken together, these four pieces of evidence are strong indicators of life," said Waggoner. "Now, our findings are being confirmed in the lab. Samples collected in the Atacama were examined, and scientists found that they contained life. The lichens and bacteria in the samples are growing and a...

Molecule that usually protects infection-fighting cells may cause plaque deposits inside arteries

...owing a diet of high-fat food. "This was dramatic evidence that showed suppressing AIM function translates into prevention of atherosclerosis," Dr. Miyazaki said. Atherosclerosis, known as "hardening of the arteries," occurs when the inside walls of an artery become thicker and less elastic. This narrows t...

Iron exporter revealed that may explain common human disorder

The first direct evidence that a single protein is critical in the cellular ...protein that imports iron into cells. However, the evidence for ferroportin's role in exporting iron back out of cells remained indirect. To determine which cel...

No relief for Pacific Northwest drought

...n said. "That was fortunate, because there's some evidence that the low-risk fire years are more difficult to predict than those with higher risk," he said. "When our models show a very high level of fire, as they do now, they are usually pretty accurate." Graphic images mapping the U.S. drought and fire ri...

Stem cells from brain transformed to produce insulin at Stanford

... sugar are, in fact, neurons. Taken together, this evidence suggested to Kim that neural stem cells may be able to produce insulin. Despite Kim's informed hunch, the fact that it worked is a bit surprising. Until recently, people had though that stem cells taken from the brain would only be able to transfor...

McGill researchers shed light on formation of carcinogen in food

...cancer in experimental animals, there is no direct evidence that furans are human carcinogens. "Even so," says Dr. Yaylayan, "food companies and government agencies are keeping a close eye on the situation. It's important to know exactly what chemicals are present in food, and to understand how they form dur...

Researchers identify protein crucial for survival of Lyme-disease bacterium

...esis of Lyme disease in mammals, but they found no evidence of that. Knockout bacteria not only survived within mice, but also produced Lyme disease in the animals. "That's when we began to look more in the tick," Dr. Norgard said. "It wasn't until we went through the later stages of tick feeding ?allowing t...

HIV-1 spread through six transmission lines in the UK

... also have impacted on transmission rates, but our evidence does not demonstrate this. You would expect growth...idemics defined by risk group, where we have found evidence for at least six larger sub-epidemics, which HIV monitoring, prevention and treatment programmes may...

Heart repair gets new muscle

...full recovery from a heart attack. However, recent evidence suggests that the heart might harbor stem cells after all and that such cells can be transformed into cardiomyocytes. In a new study published in the premier open-access online journal PLoS Biology, Neal Epstein and colleagues report that a special ...

Marburg haemorrhagic fever in Angola update

... care of patients, have been infected. There is no evidence that people can spread the virus before the onset of symptoms. Shortly after symptom onset, patients become rapidly and visibly very ill WHO is optimistic that the outbreak can be controlled if present activities continue with sufficient vigour. All...

UCSD-Salk Team Show Protein’s Gene-Silencing Role In Development of Nervous System

The first evidence that a group of proteins called phosphatases play a key role in the development of the nervous system, has been shown in fruit flies and mice by researchers at the University of California, San Diego (UCSD) School of Medicine, in collaboration with s...

Strongest proof yet found for prion hypothesis

UTMB scientists offer strongest evidence yet that infectious misformed proteins cause mad c...ology at UTMB and senior author of the paper. "The evidence in favor of the prion hypothesis was strong, but the final proof was still missing. Now we have supp...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...mpared to two control conditions, providing strong evidence that these brain areas, which are associated with the motivation to win rewards, are central to the experience of being in love." Brown noted that "an important concept is that the caudate probably integrates huge amounts of information, everything ...

Reservoirs may accelerate the spread of invasive aquatic species, researchers say

...ander Zanden of the University of Wisconsin survey evidence indicating that the physical and biological proper... tropics, and the copepod Eurytemora affinis. Some evidence indicates that the spread of zebra mussels, an economically important invasive species, may also hav...

Protein That Promotes Survival Of Stem Cells Might Be Key To Poor Leukemia Prognosis

...such as HSCs and progenitor cells. This was strong evidence that Mcl-1 was needed to maintain these cell populations. The team also demonstrated that BM cells lacking Mcl-1 did not multiply when removed from mice and cultured in the laboratory. However, BM cells with the gene continued to flourish. In contra...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

... Moreover, the findings add to the growing body of evidence showing that cord blood can save children with other fatal "lysosomal storage diseases," each of which stems from a specific enzyme deficiency. These disorders include more than 45 rare diseases, such as Krabbe disease, Hurler syndrome, Adrenoleukod...

Small species back-up giant marsupial climate change extinction claim

...g has helped Queensland researchers to unearth new evidence that climate change, instead of humans, was respon... in the creek bed. The dig also failed to unearth evidence of human activity, suggesting they didn't inhabit the region at the same time as megafauna. Queensl...

1 2 3 4 5 6 7 8 9 10