One of the key drivers of human evolution and diversity, accounting for changes that occur between different generations of people, is explained by new research published today (Sept 5) by world-renowned scientist Professor Sir Alec Jeffreys, who discovered DNA fingerprinting at the University of Leicester.
Biologists at the University of California, San Diego have discovered that a gene critical for programmed cell death is also important in the loss of adult stem cells, a finding that could help to improve the health and well-being of patients undergoing cancer treatment.
PHILADELPHIA –- An international collaboration led by a University of Pennsylvania anthropologist has shown that environmental factors, like temperature and light, play as much of a role in the activity of traditionally nocturnal monkeys as the circadian rhythm that regulates periods of sleep and wakefulness.
Something has been eating Charlie Kerfoot's doughnut, and all fingers point to a European mollusk about the size of a fat lima bean.
MBL, WOODS HOLE, MA—One of the big, unsolved problems in explaining how life arose on Earth is a chicken-and-egg paradox: How could the basic biochemicals—such as amino acids and nucleotides—have arisen before the biological catalysts (proteins or ribozymes) existed to carry out their formation?
SAN ANTONIO, TX (Sept. 3) — A long-term study of women with a genetic predisposition for breast or ovarian cancer showed that those who elected major preventive surgeries had a significantly reduced risk of those cancers.
The study, published Sept. 1 in the Journal of the American Medical Association, confirms the view of one of its researchers, Gail Tomlinson, M.D., Ph.D., interim director of the Greehey Children's Cancer Research Institute at The University of Texas Health Science Center at San Antonio.
CAMBRIDGE, Mass. - Phosphorus, a mineral element found in rocks and bone, is a critical ingredient in fertilizers, pesticides, detergents and other industrial and household chemicals. Once phosphorus is mined from rocks, getting it into these products is hazardous and expensive, and chemists have been trying to streamline the process for decades.
While vultures across Asia teeter on the brink of extinction, the vultures of Cambodia are increasing in number, providing a beacon of hope for these threatened scavengers, according to the Wildlife Conservation Society (WCS) and other members of the Cambodia Vulture Conservation Project.
Researchers at the University of California, San Diego have revealed new details about how cannibalistic bacteria identify peers suitable for consumption. The work, which employed imaging mass spectrometry, is a first step toward a broader effort to map all signaling molecules between organisms.
In 2005 an outbreak of the H5N1 'bird flu' virus in South East Asia led to widespread fear with predictions that the intercontinental migration of wild birds could lead to global pandemic. Such fears were never realised, and now research published in the British Ecological Society's Journal of Applied Ecology reveals why the global spread of bird flu by direct migration of wildfowl is unlikely but also provides a new framework for quantifying the risk of avian-borne diseases.
Female induced pluripotent stem (iPS) cells, reprogrammed from human skin cells into cells that have the embryonic-like potential to become any cell in the body, retain an inactive X chromosome, stem cell researchers at UCLA have found.
The finding could have implications for studying X chromosome-linked diseases such as Rett syndrome, caused by mutations in a gene located on the X chromosome.
Researchers at Yale School of Medicine have developed a new animal model for studying hemophilia A, with the goal of eventually treating people with the disorder. Hemophilia A, a hereditary defect that prevents blood from clotting normally, is caused by a variety of mutations in the factor VIII gene.
A large international study aimed at improving the care of muscular dystrophy patients worldwide is being launched by physicians, physical therapists, and researchers at the University of Rochester Medical Center.
Researchers at The University of Western Ontario have provided the first direct evidence using a biological marker, to show chronic stress plays an important role in heart attacks. Stressors such as job, marital and financial problems have been linked to the increased risk for developing cardiovascular disease including heart attack. But there hasn't been a biological marker to measure chronic stress. Drs.
DALLAS – Sept. 3, 2010 – UT Southwestern Medical Center researchers have identified unique metabolic properties that allow a specific type of stem cell in the body to survive and replicate in low-oxygen environments.
In a study published in the September issue of the journal Cell Stem Cell, investigators found that the low-oxygen microenvironments that ordinarily deprive and starve other kinds of cells are tolerated by a type of stem cell used as the primary material for bone-marrow transplantation.