Tag: "puzzling" at biology news

Success of introduced Argentine ants tied to reduced genetic variation

...nother apart whenever they came into contact. The puzzling question to the researchers was, why weren't the introduced ants in California the same way? Why would an Argentine ant from San Diego dropped into a colony in San Francisco be welcomed, while an Argentine ant dropped into a colony two hundred meters...

Renowned author, scientist and professor, John L. Casti, returns to IIASA

...t, gives a layman's account of several of the most puzzling controversies in modern science. He also authored Would-Be Worlds and The Cambridge Quintet. IIASA is an independent, non-governmental, interdisciplinary research institution, which specializes in natural and social scientific research methods and ...

How a hormonal henchman triggers death

...ngely enough, however, the scientists found that a puzzling burst of protective diap2 expression occurred right before reaper and hid were activated. "This burst of activity does support models that diap2 normally holds back the death response," said Thummel. "But we still don't know why the salivary...

Scientists capture new images of movement in nerves

...tracking the process, Brown says. "It's been very puzzling to people in the field why it's been so difficult to see the movement," he says. "Our paper shows the movement of neurofilaments for the first time in cultured nerve cells. The characteristics we see are very surprising, and it may explain why it was...

Robots eavesdrop on cellular discussions

...n in the cases where scientists do know, even more puzzling is how cell parts communicate with each other, often through physical contact. Dr. Fields' team and their CuraGen colleagues accomplished the work by automating state-of-the-art, but commonly used, molecular biological techniques. The researchers us...

Molecular fats prevent nerve sheath abnormality

... the face of what appear to be normal myelin."This puzzling situation apparently has been solved. In a series of studies using electron and confocal microscopy to examine very thin cellular layers, Jeffrey L. Dupree, a postdoctoral researcher in Popko's lab and lead-author of the new report found abnormaliti...

Fall Meeting: updated press conferences and special events

...s their first look at certain strange features and puzzling behavior on the frozen continent that contribute to climate. These include icy tributaries that feed large frozen streams that push icebergs into the sea; long, sinuous rows of snow dunes that are subjected to fierce, constant winds, but hold their p...

1999 Fall Meeting: Press conferences and special events

...cientists take a good look at strange features and puzzling behaviors on the frozen continent. These include giant ice streams, some dynamic and some placid, and snow dunes that stay in place despite fierce winds. It all affects global climate. Solar Moss Discovered Tuesday morning. Moss discovered on the S...

Ancient viruses lurking in polar ice

...ew infections. The findings may answer some puzzling questions, Smith adds. Virusesevolve fast, continually changing their protein coats. Yet identicalcaliciviruses have appeared at 20-year intervals on opposite sides of the US, hesays. "How did these viruses stay the same for so long? Where have they ...

Hepatitis E virus infection may be widespread in rats

...Since hepatitis E is so rare in this country, it's puzzling that so many peoplehave antibodies to the virus in their blood," says Robert H. Purcell, M.D.,chief of the hepatitis viruses section in NIAID's Laboratory of InfectiousDiseases and senior author of the study. "It may be that the high prevalence ofHE...

Presence of a fertile female in the next nest can lead a bird astray, UB research finds

...ly promiscuous," explainedWebster. While this is a puzzling scenario, he said it often is the case with many otherbirds and mammals, including humans. "In this case, if a male has several neighboring females that are egg-laying atthe same time that his mate is, then the male is more likely to have extra-pairy...

Salmon Syndrome M74: Cause Still A Mystery

Fewer Baltic salmon are now dying from the puzzling M74 syndrome, butsalmon deaths could increase again. Despite intensive studies it is still notclear what causes the syndrome, which affects newly hatched salmon fry.Researchers strongly suspect that the explanation lies in a number ofcomplex interact...

New Studies Shed Light On Facial Features Of Popular Dinosaurs

...ivingrelatives to dinosaurs, which is why it is so puzzling that scientists haven'tlooked to these animals when recreating physical structures of dinosaurs. "I think what happens is that we look for an overall match to physicalappearance," Witmer says. "When we look at a duck-billed dinosaur, we tend ...

Not Just What You Eat That Affects Risk For Heart Disease And Stroke; Your Genes Influence How Much Damage High-Fat Diet Causes

...n of genes and diet also may help explain theoften puzzling differences in dietary response that may occur between twosimilar individuals who eat the same foods. One individual may be slender andanother may be overweight and find losing weight a challenge. One person mayhave dangerously high blood levels of ...

A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens

...een the Washington volcano and Krakatau, the most puzzling to him is that the volcanic ash from the 1893 eruption appears to be harmless to insect life. In contrast, the initial ash from the Mount St. Helens upheaval was lethal to the insects in its path. It settled on the hard, waxy shell, and...

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(Date:4/22/2014)... scientists have found a way to block abnormal cholesterol ... atherosclerosis, the main cause of heart attacks and strokes ... condition develops when fat builds inside blood vessels over ... reducing their ability to feed oxygen-rich blood to the ... of experiments, described April 7 in the journal ...
(Date:4/22/2014)... (SALT LAKE CITY)A computational tool developed at the University ... with unknown gene mutations in three separate cases, U ... new study in The American Journal of Human ... Re-ranking tool), identifies undiagnosed illnesses and unknown gene mutations ... proteins that code for genes are made, in individual ...
(Date:4/22/2014)... is available in German . ... of the University of Vienna and the Medical University of ... shown how double stranded RNA, such as viral genetic information, ... the immune response against viral infection, the protein ADAR1 moves ... modifies viral RNA to inhibit reproduction of the virus. But ...
(Date:4/22/2014)... influenced by low exposure to testosterone in the womb, ... men,s testosterone levels may be determined before they are ... the hormone than others is important because testosterone is ... hormone have been linked to obesity, diabetes and heart ... for producing testosterone in adults known as Leydig ...
(Date:4/22/2014)... waited in line and most of us have gotten ... like. , For Will Mather, assistant professor of ... Integrated Science Curriculum, studying lines, or queues, has been ... bottlenecks that limit the recycling of proteins. , The ... professor, has received attention from the National Science Foundation ...
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