As SARS emerged in 2003, attention quickly turned to airplanes, the most likely source of international spread. At the time, the US Centers for Disease Control and Prevention (CDC) received passenger manifests, usually in hard copy, to notify people who had shared a flight with someone later diagnosed with the infection.In the Internet age, that procedure was hardly ideal. "The paper management of data was problematic," says the CDC's Christie Reed, mainly because of the di

SNP creates transcriptional elements that interfere with globin expression; similar mechanism could trigger other genetic disorders

Scientists use sweeping approach to generate map of interconnected cellular responses to DNA damage

Cholesterol or other sterols are critical for sonic hedgehog signaling, medullablastoma

Amino acids and leptin use mammalian target of rapomycin (mTOR) pathway to control feeding circuits in the brain

Spread-and-contract mechanism allows B lymphocytes to gather high-affinity antigens

Collagen-clearer is necessary for adipocyte development -- but only in vivo

Spontaneous oxidative DNA damage appears to induce genetic changes, fueling human diversity

Credit: © DAVID HANSON" /> Credit: © DAVID HANSON The vast majority of wildlife biologists want to protect animals, as does Rocky Gutierrez, a University of Minnesota researcher who studies barred and spotted owls. Part of his next experiment, however, could involve killing barred owls.Barred owls are often blamed for out-competing and possibly even preying on their threatened relatives, the spotted owls. The barred owls' movement across the Rocky Mountains and down the

Computational study suggests alternative coding in mitochondrial genomes may be more common than previously believed

Three papers reveal epigenetic modifications of chromatin that poise embryonic stem cells for differentiation

High levels of mitochondrial DNA deletions likely cause respiratory deficiency in aging substantia nigra, two papers say