seems 2 4

Tag: "seems" at biology news

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...account for the apparent ease with which Armstrong seems to be pedaling, albeit at a high cycling cadence. Whereas the lab tests were held constant at 85 revolutions per minute (rpm) for comparison purposes, Armstrong's "freely chosen cycling cadence during time trial races of 30- to 60-minute duration in...

Elderly mice yield clues to the process of growing old

...ns prompts a cascade of programmed cell death that seems to underpin the aging process. Writing today (July 15, 2005) in the journal Science, a team of scientists led by University of Wisconsin-Madison geneticist Tomas A. Prolla describes a series of experiments in mutant and normal mice that peel away so...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...move a small part of the very end of a protein, it seems unlikely to disrupt how the rest of the protein folds in a three-dimensional structure, but that's what most scientists think goes wrong if a protein doesn't go to the surface," says Li. "But now we know the problem might just be a faulty transportat...

One bacteria stops another on contact

...ract infections, noted the scientists. The disease seems to go away for awhile, then something triggers recurrence of the disease. Work by Scott Hultrgen at Washington University has indicated that E. coli cells may hide in the walls of the bladder and urinary tract in a dormant state, explained Low. It ...

Old drug, new tricks: Prospects for slashing the impact of malaria

...in this way, Fansidar does not prevent malaria but seems to produce a massive 50% reduction in death, debil...leader, Dr Louis Schofield from WEHI, says, "There seems to be a totally unexpected residual immunological effect when children are given this tablet as a pr...

Digging in the dirt for life's biochemical foundations

It seems a mighty feat for a microscopic fungus built from threadlike filaments. But collectively, these spindly mushroom relatives help move several billion tons of nutrients out of the soil and into plants each year. Now, new Michigan State University-suppo...

Sugar helps control cell division

... and the location of the modification." The sugar seems to modify as many proteins as the ubiquitous phosp...cognized as protein controllers, and it frequently seems to compete with phosphate groups for the same spots on proteins. Hart suggests that a particular bal...

'Underground' tunnels discovered as means for communication between immune system cells

...stances such as cytokines, the authors say. It now seems clear that intercellular communication is much more complicated. While it would be fascinating to see this interplay inside living tissue, detecting the tiny tubules in such a complex environment may be nearly impossible with current technology. ...

Neanderthal teeth grew no faster than comparable modern humans'

...ildhood compared to that of modern humans but that seems flawed, based on a new assessment by researchers from Ohio State University and the University of Newcastle . They found that the rate of tooth growth present in the Neanderthal fossils they examined was comparable to that of three different popula...

Computers close in on protein structure prediction

...rately compute the energy of the structure. "What seems to be critical is the packing of the molecule," Baker said. "The protein fits together perfectly with no holes in the middle, and no atoms on top of each other. It's about as densely packed as it could be. It's like a three-dimensional jigsaw puzzle....

Vibrio bacteria could be a risk to fish as well as humans

...h pathogens. The new species, Vibrio brasiliensis, seems to be related to Vibrio tubiashii, which has long been known to cause disease in oysters. Professor Austin comments: "Having observed this, the question arose about whether any of these new species could have implications to the health of marine ani...

Life's origins were easier than was thought

...tions of the cell. In the early stages of life, it seems that the first RNA chains would have had the dual role of self-replicating (as is today the case with DNA) and participating actively in the chemical reactions of the cell activity. Because of their dual role, these cells are called ribozymes (a con...

Errors in the measurement of global warming corrected

... Sherwood. "There are steps we should take, but it seems that shaking people out of complacency will take a strong incentive." ...

Breast tumors in mice eradicated using cancer vaccine

...sing the tumor antigen to a bacterial protein that seems to activate antigen-presenting cells. They have found that by doing this the immune system now recognizes regions of the HER-2/neu molecule that are not immunogenic when presented by other vaccine approaches. Paterson first hit on the idea of using...

Women feel more pain than men, research shows

...lated sensations (e.g., rapidly beating heat), and seems to be important in the experience of pain sensations. In a study of 150 patients referred to a hospital clinic with chest pain, researchers discovered that the factors that predicted pain in men and women were different. Researchers believe that it ...

Immune system has evolved to prevent autoimmune disease

...onse method employed by our adaptive immune system seems keyed to this number, producing antibodies that are statistically likely to mistakenly bond with healthy proteins slightly less than one in a trillion times, meaning that on average, they recognize only invading pathogens. ...

Stolen gene allows insect virus to enter cells

...oduce F proteins, which persist into adulthood. "f seems to be developmentally regulated, like a lot of Drosophila genes," says Blissard. Exactly what role the F protein plays in fruit flies remains to be answered. At some point, perhaps after retroviruses had sprinkled host genomes with multiple copies o...

Newly recognized gene mutation may reduce seeds, resurrect plants

A mutated plant that seems to return from the dead may hold the secret to how some flora protect their progeny during yield-limiting drought and other stresses, according to Purdue University scientists whose study of the plant led to discovery of a gene. The gene, called RES...

Tissue regeneration operates differently than expected

...contrast, in the heart muscle tissue the mechanism seems to be different from this. The scientists in Bad Nauheim conclude from their study that adult stem cells are involved in tissue repair processes in a paracrine way by delivering mediating factors rather than by simply becoming components of the regen...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...uman beckoning 'come here??deRivera said. “It also seems to serve as a 'come hither' signal, as a male waves, standing at his burrow entrance, and interested females come over.?/p> Interested females initially eye the males, who select their burrows based upon their body size, and if they’re interested...

1 2 3 4 5 6 7 8 9 10