Need sex? It's probably something about stress
...o those cells. The repair mechanism keeps the hard knocks that life dealt the parents' DNA from being passed on to the children. "Sex is all about maintaining the health of the DNA you give your kids," Michod said. Although there has been work supporting the DNA-repair hypothesis as the reas...Researchers describe long-perplexing 'magic spot' on bacteria
...at drug developers could design an antibiotic that knocks out RfaH, effectively shutting down a bacterium's virulence. "We're trying to give the scientists who work on these pathogens detailed models of RfaH and ppGpp behavior," Artsimovitch said. "That may lead to better-targeted antibiotics that can reall...Cells' ability to live without oxygen give clues for treating major diseases
...up-regulating two genes, IAP-2 and Bcl-xL. When he knocks down the genes, the cell's sensitivity to injury returns. "This response, I believe, provides a mechanism for those cells to survive ischemic stress and gives them a chance to repair the injured kidney," says Dr. Dong, whose discovery of the role of...New drugs restore immune response blocked by hepatitis C virus in human cells
...id. "As opposed to just studying how much the drug knocks down the virus, now we will evaluate how the drug impacts the host cell's response to the infection," he said. Dr. Stanley Lemon, dean of medicine at UTMB and director of its National Institutes of Health-funded hepatitis research center, noted that ...Physics tip sheet #34 - April 1, 2003
... fall down to fill the gap and the energy released knocks another electron out. This electron is emitted along the line from the carbon atom toward the oxygen atom, creating the electron "searchlight". This process, called Auger emission has been known of since 1925 but this is the first observation of the ...A unique hemoglobin may help the baby kangaroo's journey to the mothers pouch
...determine their molecular weight. The process also knocks off amino acids from either end of the peptide and the molecular weight of the new peptides is measured. With a general knowledge of the amino acid composition and sequence of hemoglobin, this enabled the determination of the sequence of each globin.......bling the protein to work, while alpha-lipoic acid knocks down oxygen radicals," Ames said. "Each chemical solves a different problem - the two together are better than either one alone." Ames and Hagen have long had an interest in mitochondria as they relate to aging, and they were intrigued by a 1999 Ital...New mouse marks latest stride in muscular dystrophy research
...o what it was designed to do, or in a protein that knocks out other genes or proteins. But scientists have found that these straightforward explanations do not seem to hold when it comes to myotonic dystrophy. Mice with an abnormal protein product of the myotonic dystrophy gene share only a few of the sympt......s it is in manycases of human cancer, RB no longer knocks out these proteins,and cells grow out of control. "To grow correctly, a cell needs both a gas pedal and abrake pedal," says Ludlow. "The RB protein acts like the brakepedal, reining in growth in a precise and controlled manner.Disable that brake...