Tag: "again" at biology news

Link between climate change, amphibian declines explored

...w remaining Colorado boreal toad populations began again in 1997 and almost certainly is tied to the fungus, Carey said. "We used to see total die-offs of isolated boreal toad populations take place in two years, but they do not seem to be decimated so quickly in recent years," she said. "It may be tha...

Do mitigated wetlands really work? Only time will tell

...ee if the wetlands converge again or whether the difference in productivity is ...w nature in a real setting, again at a tenth of what it would cost to build an actual zoo," he said. ...

NY pilot study pushes Human Genome Project toward cures for disease

...ide chemistry. This strength was demonstrated once again in October 1999, when RU Professor and HHMI Investigator Gnter Blobel received the Nobel Prize for Physiology or Medicine. Blobel, who made the seminal discovery about how proteins are directed to their appropriate places in the cell, was the 20th sc...

Common algae can be valuable source of hydrogen fuel

... photosynthesis. Then, two or three days later, it again can be tapped for hydrogen, Melis said. "The cell culture can go back and forth like this many times," said Dr. Maria Ghirardi of NREL in Colorado....

Do mitigated wetlands really work? Only time will tell

... to see if the wetlands converge again or whether the difference in p... view nature in a real setting, again at a tenth of what it would cost to build an actual zoo," he said. ...

Isle Royale wolves doing well

...e situation, both animals were gone. "We saw them again five days later about a half-mile from the battle scene. They were standing atop a little knob and we were able to see clearly that the male was licking some wounds on the female's neck. We never saw them again, so we don't know for sure whether or n...

Estrogen may fuel lung cancer growth, report University of Pittsburgh scientists

... more active in lung tissues in women than in men, again providing a biological reason for why lung cancer differs between the sexes. For more information, see http://www.upmc.edu/NewsBureau/lauren/biological_lung_cancer.htm . Dr. Siegfried's research on estrogen is supported by the University o...

Monkeys pay one another for work

...chin was two or three times more willing to assist again when it was rewarded for its efforts with food in the immediately preceding trial. "The increased tendency to share after successful joint efforts to obtain food may be the result of psychological mechanisms as complex as displaying gratitude fo...

New antioxidant vitamin RDAs better, but not good enough

... go far enough," Frei said. "These levels are once again about what it takes to prevent deficiency symptoms, not the amounts that could clearly help us in the fight against cancer, heart disease, stroke and other chronic health problems." Both clinical and epidemiological studies by numerous researchers p...

Northwestern team identifies first enzyme in mammalian circadian clock

...s to inhibit them, the CLOCK-BMAL1 team is free to again "turn on" the genetic switch and the cycle begins anew. A complete cycle takes 24 hours. In identifying CKIe's role in clocks, Takahashi's research team focused on a known circadian gene mutation called tau in a strain of Syrian hamsters. The res...

Study: breath test effective in showing patients who should get less cancer drug

...aspirin or Tylenol, the reason you need to take it again in four to six hours is that your body has chewed it up and gotten rid of it through a certain chemical pathway in the liver," said Dr. Paul B. Watkins, professor of medicine and director of the Verne S. Caviness General Clinical Research Center at t...

Give it a thought -- and make it so

...able even to speak may be able to communicate once again if this technology can be perfected, explains Bayliss. By merely looking at the telephone, television or thermostat and wishing it to be used, a person with disabilities could call a friend or turn up the heat on a chilly day. Bayliss hopes that some...

Fact sheet: the Report on Carcinogens - 9th edition

...ent or prevention. It is, therefore, important to again note that these listings do not address potential benefits of exposures to certain carcinogenic substances. In this instance, the benefits of exposure to the substance have been determined by the FDA to outweigh the risks entailed. Personal decision...

Alcohol and thiamine deficiency together: a dangerous combination?

...ice of food supplementation is okay," said Gauvin, again referring to his earlier study. "When we gave our animals regular food that contained thiamine, they did not develop sensitization to alcohol. The body can naturally absorb and process low-graded doses of thiamine in the gut and the liver. It's th...

NYU biologist identifies gene that regulates how plant cells proliferate and organize to form root systems

... interested in the root systems of plants. This is again for reasons of simplicity. The root has a simple radial structure, its growth is continuous, it is transparent and there are a small number of cell types. In the May 26 issue of Cell, Benfey reports that he has identified a gene that governs how pl...

Seafloor off Mid-Atlantic coast highly charged with gas

...or. The importance of exploring our own planet is again made very clear." "We were a bit taken aback, to be sure," Weissel said. "A great deal more work is needed before any definitive statements can be made. Regardless of the source, it is apparent that gas charging plays a critical role in the area, ...

Bt corn variety found to be safe to Illinois butterfly

... corn plants. The endotoxin from the same Bt corn again had no effect on survivorship of the caterpillars, nor did the pollen from non-modified corn. Pollen from another transformed variety, Novartis Max 454, however, did cause mortality in the laboratory. Antibody assays of the Novartis event showed th...

Nurses, alert janitors boost seniors' mental health

...ers re-surveyed and interviewed all the residents, again measuring psychiatric symptoms."We picked this particular population," Rabins says, "both because of ease of access and because we knew from earlier studies that people in public housing tend to be in greater need of psychiatric help." The PATCH pro...

USGS reports increase of sea otters in recent survey

...tions on set-net fishing, the population increased again until 1995, but has since declined. In 1977 the California sea otter was listed as threatened under the Endangered Species Act. Disease, contaminants, starvation, and entanglement or entrapment in coastal fishing gear may have contributed to the rec...

Gene found responsible for social amnesia

...al amnesia disappeared. Like the normal mice, they again showed the characteristic decline in time spent investigating familiar females, and recovered interest when a new female entered the cage. Virtually all forms of psychopathology, which include some of man's most debilitating clinical disorders, are...

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