Tag: "fate" at biology news

Salvage Gene Is At The Root Of Many Mutations

...ill eventually die. Cells usually avoid this fate -- as well as mutations -- by accurately repairing abasic sites in a variety of ways.But very rarely these cellular efforts at quality control fail, and it's at this desperate stage that REV1, the enzymediscovered by Nelson, Hinkle, and Lawrence, cau...

Beset By Human Competition, Penguins Must Take Marathon Food Trips To Avoid Starvation, A Researcher Finds

...ck first," says Boersma. "If a chick is small, its fate is death." So great has been the competition for food, that the numbers of temperate penguins have been slowly diminishing over the years. The Punta Tombo colony declined by about 20 percent between 1987 and 1995. However, last year, inexplicably, th...

Discovery Of Genetic Pathways May Provide New Ways To Combat Candida Infections

... and his associates recently captured on video the fate of immune cells infected with Candida in a petri dish. When Candida enters a host, the organism is eaten up by cells called macrophages, which are the sentinels of the immune system. But soon, the fungi fight back, switching to a filamentous form a...

Selenium Soil Contamination: Possible New Approach Identified

...nants in soils and sediments. Selenium's fate in contaminated soils has long been linked to thedecomposition of plant material and other microbial activity, which was thoughtto be the primary means by which soluble, chemically active forms of seleniumcould be reduced to an elemental state. Elem...

Virginia Tech Engineers Help Mother Nature Clean Up

...r suchvariables as groundwater flow, the long term fate of the contaminantand the long term fate of the soils contaminant. In the process, Novak and Widdowson willalso be measuring the rate of ...

Human Cloning: Grappling With Reality Penn Bioethicist To Explore The Facts Behind The Hysteria

... of imposing knowledgeabout the clone's biological fate without the prior, informed consent ofthe clone demand attention before any additional thought is given topursuing cloning technology. Editor's note: Dr. Caplan can be reached by calling 215-898-7136 or bye-mail...

Jefferson Researchers First To Create Genetically Engineered Mouse To Study Photoaging

...se they can provide information about the possible fate of acell." The transgenic mice do not have any physical differences that wouldvisually distinguish them from other mice, and they can be bred since they passalong the human elastin promoter linked to the CAT gene to their young. Cellcultures...

Environmental Impact Of Antifouling Paints And Tributyltin Regulations

...mpounds in theenvironment, including environmental fate and analysis, biomonitors andbioavailability, and trends and risks. The research will be presented hereApril 1 and 2 at the national meeting of the American Chemical Society, world'slargest scientific society. Are There Viable Alternatives To TBT? ...

Anti-TBT Regulations Shift Environmental Burden To Other Countries

...mpounds in theenvironment, including environmental fate and analysis, biomonitors andbioavailability, and trends and risks. The research will be presented hereApril 1 and 2 at the national meeting of the American Chemical Society, world'slargest scientific society. ANTI-TBT REGULATIONS SHIFT ENVIRONMENTA...

The First Rejection: Eggs Sequester Bits Of Sperm For Later Elimination

...scence staining, Karr and Pitnick have tracked the fate of the giant sperm tails of two species of fruit fly, D. melanogaster and D. pachea, throughout embryogenesis. They noticed that after the sperm entered the egg, its tail was partially degraded by the egg's enzymes, but otherwise remained intact an...

Little Known Protein Prevents Formation Of Kidney Stones In Trace Amounts

...can grow into dangerousmasses. "It is the natural fate of supersaturated solutions to grow crystals,"says Asplin. "Something must be working to prevent this in the kidneys." Over the past ten years, several proteins have been found that have someeffect on slowing or stopping crystal form...

As The City Goes, So Goes The World: Symposium At ESA Meeting To Examine The Ecology Of Cities

...ightcrawlers as a case study, she will look at the fate of urban ecosystemsfaced with changes in nutrient cycling patterns caused by nonnative species. The two urban LTERs in Baltimore, MD, and Phoenix, AZ, are unique in the LTERnetwork in that they are located in the urban "jungles" of large U.S. cities....

Study 'Gone With The Wind' Provides Stellar Ecological Example

...ver Great Exuma. Location made a difference in the fate of organisms. Spiders and lizards werecompletely wiped out and vegetation greatly damaged on the 11 southwest, orcatastrophically hit, islands, whereas populations of lizards were reducedapproximately by one-third and those of spiders nearly 80 perc...

Putting A Price Tag On Pollution

... "My method makes predictions about the physical fate of ground pollution,"the Hopkinsengineer says. "But there are other factors that ought to be considered, such asthe impact on thelocal community and the need for new roads and traffic signals. It's a matter ofgiving differentweights to different fact...

Fruit-Eating Birds Discovered Crucial To Rainforest Survival

... SAN FRANCISCO, Calif., Aug. 6, 1998 -- The fate of tropical rainforests inWestern and Central Africa depends in large part on the survival of magnificentfruit-loving birds known as hornbills, new research has revealed. In a three-year study in a remote Cameroon rain forest, biologists at SanF...

Highlighting USGS Science At ACS

...' water chemistry, and may affect the mobility and fate of mercury, a highly toxic metal. This study is part of a larger, inter-disciplinary effort by the USGS to provide sound scientific information to the public and natural resources managers who make decisions about the reestablishment and maintenance ...

Better Golf Course Chemical Management Possible With "Kturf" Website

...chingmodel," is part of a special symposium on the fate of turfgrass chemicals andpesticide management approaches, sponsored by the agrochemicals division. On average, KTURF's predictions are within 4 percent of testing case values,Starrett said. That is, when presented with data about a setting it has ne...

University Of Chicago Researcher Receives Packard Fellowship

...," Long says, "because this gene avoided the usual fate of theprocessed gene (death) and was "reincarnated" into a new structure with novelfunction." Long is now busy accumulating evidence in support of the "introns-early"theory, which suggests that introns existed before prokaryotic (bacteria) an...

AAAS Annual Meeting And Science Innovation Exposition

...quakes psychoanalytic perspectives on dreaming the fate of the universe keys to the Cosmos Noteworthy speakers include Author and producer Michael Crichton (Plenary lecture, Monday, January 25, 8 a.m.) California Institute of Technology President David Baltimore (Topical lecture, "Designing an AIDS Va...

Life In Womb Determines Adult Health

...abetes and obesityare more likely to be the ironic fate for adults who had low birth weights orwere very thin at birth. "Babies who prepare in the womb for a thriftyexistence pay the price after birth if they live a life of over consumption ina situation in which food is plentiful," Nathanielsz says. "...

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