Tag: "found" at biology news

Female Fireflies Lure Males For Defense Chemical

...em. Because the fireflies' defensive compound was found to have a close chemical resemblance to bufalin steroids in the venom of poisonous Chinese toads, the Cornell researchers combined the Latin terms for "light" and "toad," respectively, and coined the word, "lucibufagin." Lucibufagins are plentiful ...

Jefferson Scientists Find Potential Deadly Effects Of Two Missing Cancer-Suppressor Genes

..., studying specially bred "knockout" mice, have found that two genes that normally protect against ca...or genetics," he points out. "It was previously found that this particular combination of altered genes is significantly lower in human tumors--our ...

A New Biochemical Link Established Between Stress, Sex And Dominance

...y be widespread."The interesting new thing we have found is that stress depends not only on the social state of the individual male but also on the stability of the community," Fernald said. Fernald is the Benjamin Scott Crocker Professor of Human Biology and director of the Human Biology program at Sta...

Common Childhood Virus Poses Threat To Adults, Research Shows

COLUMBUS, Ohio -- Researchers have found that a respiratory virus commonin children under t...cember 1990 and May 1992 in twoOhio counties, they found that 57 of the patients -- or 4.4 percent -- actuallyhad RSV. “RSV has never been recognized a...

Maternal Lead Exposure Linked To High Numbers Of Cavities

...s likely one cause of thehigh rates of tooth decay found among certain groups, such aschildren raised in th...mpared to offspring of rats not exposedto lead and found that offspring from exposed rats had 40 percentmore cavities. The study, funded by the National Inst...

Researchers Discover First Animal Strain Of Hepatitis E Virus

...born to antibody-negative sows were found to seroconvert (develop antibodies to ...at of human hepatitis E virus. They found that the swine virus <font color="#FF0000" size="3" face="Arial"&#...

MGH-Led Team Finds Gene For Crippling Neurologic Disorder

...s different mutations in the same gene are usually found in different families. "This situation, with onl...ion, which is stillunknown." The researchers also found that the DYT1 protein has significant similarities to the heat-shock proteins and proteases. Found ...

Molecular Piracy Turns Protein Into Traitor

... defence mechanisms, making modifications until it found a molecule with the desired properties. In this particular case, the virus was hunting for a molecule that would prevent an inflammatory immune response that might clear the virus. "The hope is that by understanding how the virus made this antagonis...

Planned Burning In Forests A Boon To Several Species Of Birds In Illinois

...gricultural landscapes arebad for birds. Well, we found that they are doing better in the areas ofrestoration burns."...

Trojan Horse Virus Controls Hiv Infection

...ceptor -- CD4 and the coreceptor CXCR4 -- normally found on human T cells. These receptors enable HIV to attachto, enter and infect T cells. These receptors also permit cell-to-cell HIV infection to occur. HIV-infectedcells flag themselves for destruction by the body'simmune system by displaying HIV's ...

Seeds Without Sex

... In a world-first discovery, CSIRO scientists have found a gene that allows Arabidopsi s - a test plant used by scientists because of its rapid lifecycle - to bypass the normal pollination process and begin seed formation.This is the crucial first step in developing plants which can produce seedwithout pol...

Chemists Develop High-Throughput Method To Synthesize And Screen Novel Antibiotics

... result to having access to all these isomers iswe found some are lytic and some are non-lytic to bacteria," saidDay. The lytic antibiotics actually burst open the bacterial cells.The non-lytic forms inhibit growth without destroying thebacteria. That's important, because some bacteria containextremely dan...

Basin Traps Air Pollution In Mexico City: International Study Has Implications For U.S. Cities

... air pollution throughout the world, includingthat found in U.S. cities," said Pacific Northwest's Sylvia Edgerton, projectdirector. The data will be used to improve computer models designed to predictatmospheric conditions and potentially guide responses to pollution -- such aschanging the locatio...

Lethal Parasite Prime Suspect In Fish Kills At Salton Sea

...sh collected at the Salton Sea for parasites. She found 22 to be infested with moderate to high level...of 1996, a large mortality event in birds was found to be caused by avian botulism. This outbreak resulted in the death of more than 14,000 fish...

Low Oxygen, Key To Fetal Development, Also Offers Cancer Clues

... the nutrients in themother's blood. The team found that the amount of oxygen in blood directlyregulat...ta forms. Under the low-oxygen conditionstypically found in the placenta during the first 10 weeks ofpregnancy, the cells proliferate but don't invade the ut...

Fossils Show British Columbia Was Once 2,000 Miles South

...esearchers took their core samples only where they found the shinyfossils. In every case, the sedimentary rocks showed a magnetic field closer tohorizontal than would be expected for northerly latitudes. Since there was noevidence of heating, and remagnetization, the conclusion was that the rockswere form...

Mutant Gene Not Sole Explanation For Hiv Non-Progression

...r disease progression, the LIR team found that people with one copy of the mu...a resounding no." The investigators found that nonprogressors with one copy of the mutant CCR5 gene were indisti...

Largest Tyrannosaur Fossil Unearthed In Montana

...argest specimen of aTyrannosaur ever unearthed was found this summer by a field crew headed by J.Keith Rigb...wners of the cattle ranch on which the fossilswere found entered the site and began digging up the bones that remained in theground, including the skull. Co...

Researchers Find Association Between Alzheimer's Gene And Mental Impairment After Cardiac Surgery

...r."After controlling for other characteristics, we found a statisticallysignificant correlation between pat...," Newman said. "The fact that thisassociation was found in such a small study population leads us to believethe results will be borne out in larger studies....

Wonder Thread: UD Scientists Report First Protein With Collagen And Elastin-Like Domains

...amined the protein precursors for Col-P and Col-D, found in the mussel foot, where byssal threads are produ...an elastin, Coyne reports. "Elastins typically are found in the skin and arteries of vertebrate species only," she notes. "The presence of these types of seq...

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