Octopuses occasionally stroll around on two arms, UC Berkeley biologists report
... Japan used the same gene to evolve low armor, but has no changes at all in the protein coding region. Instead, Kingsley said, "the mutations that we have found are, we think, in the (gene's) control regions, which turns the gene on and off on cue." So it seems that evolution of the fish is based on how ...Studies reveal methods viruses use to sidestep immune system
...t Nile, influenza and the common cold. "This work has broad implications that go beyond just the hepatitis C virus, and that's what we're most excited about," said Dr. Gale. "It's a battle between viruses and humans. Viruses have co-evolved with their hosts, so every time we have evolved a gene with a n...Development of portable infectious disease detector
...orate on the development before theholidays.VIIBRE has spent the last three years developing the ability ...umbers ofcells reliably. In the process, the group has applied for more than 12patents. Meanwhile, Pria has developed a micro-optical fluorescence spectro...Researchers add new tool to tumor-treatment arsenal
...studies continue. "The use of DNA-damaging agents has revolutionized chemotherapy against a wide variety...indow, combined with possible severe side effects, has greatly limited their broader use." These factors, says Dr. Thomas, have probably contributed to re...Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers
...y system of insects may have solved a mystery that has intrigued physiologists for decades: why insects routinely stop breathing for minutes at a time. Challenging previous theories, researchers at UC Irvine and Humboldt University propose that insects such as grasshoppers, moths, butterflies, some type...Scientists discover unique microbe in California's largest lake
... gene over such a long time periodsuggests that it has been favored by natural selection," Miller says.Th...instant evolutionary innovation bygenetic exchange has in fact had consequences for ribosome function inthese bacteria.The new species of Acaryochloris is ...Alcohol's effects on gene expression in the central nervous system
... alcoholism, such as brain damage. "The challenge has been to find out which genes ?out of more than 50,...examination of a small glass microscope slide that has thousands of different DNA samples attached to it ?that are applied to brain function are just begin...HIV Infection Still On The Rise
...For instance, the search for a vaccine against HIV has so far produced only negative results, while microbicides have proved disappointing. Although the ABC message (abstinence, be faithful, use a condom) is popular with the American government, its application in other parts of the world may not have th...Research Gives Hope For Liver Damage
...n the liver have not been wellunderstood, and this has hindered progress in finding ways to preventand re...ver failure than do of cancer of the cervix."There has been a fourfold increase in the number of men aged 45-54dying of cirrhosis since 1970 and a threefol...New SARS Protein Linked To Important Cell Doorway
...tly produced version of the SARS virus where orf7a has been genetically knocked out. Scientists hope to use it to learn what orf7a does for the virus and how important it is to the virus' ability to survive and reproduce. "If knocking out orf7a significantly attenuates the virus, we may able to look at ...MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks
...ods for modelingchemical kinetics stated, "Dr. Lok has succeeded in adapting andcreatively extending earlier developed techniques for stochasticallysimulating chemical reactions so that they can be used to study realcellular systems, where the huge numbers of potential species andreaction channels makes ...NYC's First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention
...drug-resistant AIDS by mid-January. Ordinarily, it has taken up to ten years for an untreated individual ...llness and diagnosis. "It appears this individual has contracted a new, particularly virulent strain of HIV that swiftly advanced to AIDS in just a few sh...Jumping gene helps explain immune system's abilities
... its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the protein's DNA-snipping crevice areidentical to those in other jumping genes' proteins, even though theoverall...UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections
... its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the protein's DNA-snipping crevice areidentical to those in other jumping genes' proteins, even though theoverall...NIAID Initiates Trial of Experimental Avian Flu Vaccine
Fast-track recruitment has begun for a trial to investigate the safety of a v...says NIAID Director Anthony S. Fauci, M.D. “NIAID has supported research on H5N1, the strain responsible for this deadly form of avian influenza, since 19...Scientists document complex genomic events leading to the birth of new genes
...e rest of the animal kingdom. Human chromosome 2 has always intrigued primate biologists; it formed fro...e responsible for primate or human distinctiveness has been a major challenge to scientists. However, this work by Bork and his colleagues should further e...New therapy for HIV/AIDS eliminates needles and excessive toxicity
... its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the protein's DNA-snipping crevice areidentical to those in other jumping genes' proteins, even though theoverall...Nano-Probes Allow an Inside Look at Cell Nuclei
...ese processes. "We could determine whether a drug has arrived where it is supposed to, and if it is havi...ble for the study of living cells. This technology has been licensed to the Hayward, California-based Quantum Dot Corporation for use in biological assays....DNA Recombination and Repair—A New Twist to RecA Function
...nize their activities to carry out these functions has remained obscure. Cox et al. addressed this problem in the test tube, by examining RecA filaments grown from mixing RecA protein with DNA. Previous experiments have shown that filament assembly spreads rapidly in the 5'-to-3' direction once the firs...... its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the protein's DNA-snipping crevice areidentical to those in other jumping genes' proteins, even though theoverall...