Efforts to clone primates move forward
... these techniques in rhesus monkeys, it would go a long way toward discovering whether it is possible to create immune-matched stem cells."...Impulsive behavior may be relict of hunter-gatherer past
...come along can lead to getting more rewards in the long run. The work may help explain why many modern-day...rd were able to "earn" as much or more food in the long run as birds that were forced to wait for the larger reward or to follow a mixed strategy. The reaso...Study reveals developing countries with recipe for thriving health biotech industries
...c approach is likely to be more sustainable in the long run, says Halla Thorsteinsdttir, D.Phil, Assistant Professor at the University of Toronto and the study's co-ordinator. To overcome this, most countries have or are promoting clusters in health biotechnology to support collaboration. E...Yale and Pfizer launch visiting professorship pilot program
...he body with a simple blood test to detect a tumor long before it is clinically detectable. These assays allow even current treatments to be more effective. The early detection studies in Maihle's laboratory are particularly advanced for breast and ovarian cancer patients, but also show promise for ...Researchers discover direct link between agricultural runoff and massive algal blooms in the sea
...epleted "dead zones" in the ocean. Scientists have long suspected that many harmful blooms are fueled by f...which can shut down mussel and clam harvesting for long periods of time. Another concern is hypoxia, or oxygen depletion, which is caused by excessive algae...Scientists uncover clues to the mystery of 'gene deserts'
... the journal Genome Research. Gene deserts are long stretches of DNA between genes that were once thought to have no biological function, and were dismissed as "junk DNA." As scientists probe deeper into the DNA's double helix, however, they are discovering that many of these "non-coding" segments act...First analysis of chicken genome offers many new insights
...'s sense of smell, and suggested that the chicken, long used to study gene activity in the earliest stages of life, may provide a good model for studying changes in DNA linked to aging and death. Other findings from the analysis, reported in the Dec. 9 issue of Nature by the International Chicken Genome S...UCSD researchers derive lessons about human evolution from chicken genome
...'s sense of smell, and suggested that the chicken, long used to study gene activity in the earliest stages of life, may provide a good model for studying changes in DNA linked to aging and death. Scientists also identified genes that affirm the chicken's value as a model for study of developmental disorde...International team finds gene variants that affect response to HIV infection
...cember 9, 2004, issue of Nature. AIDS researchers long have wondered why people have varying responses to HIV infection. "Some people rapidly progress to illness within a year or two, while others after 20 years of follow-up are still doing fine," said Walker. "The range of outcomes is widespread." To e...Chicken genome analysis unlocks secrets of mammalian and bird evolution
...evolutionary distance between chickens and humans, long blocks in the genomes of both species contain genes that share the same chromosomal position. Expansion and contraction of gene families may be responsible for the independent evolution of mammals and birds. The chicken seems to be the only verte...Canola study solves seed oil mystery
...ng up of carbon dioxide. Scientists have long known that in the process of photosynthesis, Rubisco is the key enzyme that captures atmospheric carbon dioxide for conversion into sugars. However, the MSU team was surprised to see Rubisco the enzyme's shorthand stands for ribulose bi...Birds, butterflies, bacteria same law of biology appears to apply
...ht microbes might be different. "There has been a long standing idea that microbes are so abundant and so small that all the different types of bacteria are mixed up all the time and are, therefore, randomly distributed," says Jennifer Hughes of Brown University, a co-author on the bacteria paper, along ...US researchers warn of possible fertility risk to men using laptop computers on their laps
...l temperatures increased by 1C, so it did not take long to reach a point that may affect testicular function. Also, frequent use may cause intermittent temperature rises, which could significantly increase a single heating effect. "Until further studies provide more information on this type of ...New tuberculosis antibiotic may shorten treatment time, fight drug-resistant strains
...50 percent. Shortening the drug regimen could go a long way toward making the treatment more effective. Many patients currently stop taking the drugs before their infection is cleared because of the side effects and inconvenience, according to Andries. To improve adherence to the lengthy regimen of curre...Nanotubes glow, even within biological cells
...allium arsenide detector elements. Although long term studies on toxicity and biodistributions must be completed before nanotubes can be used in medical tests, the new findings indicate nanotubes could soon be useful as imaging markers in laboratory in vitro studies, particularly in cases where the...Genetic defect confers risk of major depression, resistance to SSRI drug therapy
...senger, the researchers explained. Scientists had long considered the enzyme known as tryptophan hydroxylase (TPH1) to be the sole enzyme governing serotonin synthesis in the nervous system. Last year, however, researchers at another institution found that a second enzyme, tryptophan hydroxylase-2 (TPH2)...Gene therapy reduces skin cancer to sunburn in mouse model
...several days. Five months after the last exposure long after Xpa mutant mice would normally develop skin lesions the treated mice merely had sunburn. The skin cells surrounding the site of the injection in the treated Xpa mutant mice were nearly identical to those of normal animals, indicating tha...Strange ocean wave patterns raise questions about beach erosion
... wave flow patterns in the water. Researchers have long known that the surf contains many different currents that interact to affect how sand washes away from a beach. That's why mitigating beach erosion is so difficult, Lippmann said. But their close examination of the oscillating water flow at different...Doctors link common chemotherapy drug to jawbone necrosis
...the drugs are given intravenously, and usually for long periods of time. In their study, Dr. Ruggiero and his staff teamed up with Bhoomi Mehrotra, MD, in the Division of Hematology-Oncology at LIJ, and doctors in the Oral-Maxillofacial Surgery Division at the University of Maryland Medical Center. Of ......'s functions. Most scientists agree that over very long periods of time, mutations in the genetic code are... used as a predictor of what the dog looked like - long muzzle or short. In the same genetic region from wild coyotes and wolves, the researchers also found...