Pirated genes reign in tumors. Allegations of cancer. Meeting of the American Astronomical Society. Debris left over from the formation of Uranus and Neptune may have created a comet reservoir, smaller than the well-known Kuiper belt, but just as massive as the collection of asteroids between Mars and Jupiter. Meeting of the American Astronomical Society.
Planets marshal the cometary parade.
Rising levels of leptin, a hormone secreted by fat cells, may trigger the onset of puberty in girls. Early onset of reproductive function in normal female mice treated with leptin. New chapters in the leptin tale. Debunking a myth about sperm's DNA Contrary to what some leading evolutionary biologists say in their books and articles, paternal mitochondrial DNA does get into the egg when the sperm fertilizes it. Two molecules of the antibiotic vancomycin, connected together, can kill antibiotic-resistant bacteria better than a single molecule.