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Molecular epidemiology reveals path virus took from Africa to Asia, CDC expert says

Director of national lab's resignation welcomed, but many may take early retirement

This month, National Geographic and IBM launched the Genographic Project, an ambitious attempt to trace human migration out of Africa during the last 50,000 to 60,000 years.

For untenured professors, the pressure to publish is intense.

Dimitri Bonnville got cardiac stem cell therapy. Now he's suing

Since 1998, when 18-year-old Jesse Gelsinger died in a clinical trial at the University of Pennsylvania, the news on gene therapy hasn't gotten much better.

The tally is grim: three high-profile cancer cases, including one death, in French boys who underwent pioneering gene therapy for X-linked severe combined immunodeficiency (X-SCID).

The same family of transcription factors directs the epidermal wound repair in mice and flies, according to two research teams.

Researchers at Israel's Weizmann Institute of Science report that lymphocytes rolling on high endothelial venules stop abruptly in response to chemokines presented by endothelial cells.1 Their findings suggest that chemokines stop lymphocytes in a fraction of a second, faster than previously thought.Ronen Alon and colleagues found that chemokines trigger instantaneous extension of the LFA-1 integrin – an adhesion molecule that changes between an inactive, bent conformation and an active, e

Protein aggregates generated in a test tube were found to infect wild-type hamsters with a disease much like scrapie.

Have you ever needed a red fluorescent version of a protein, but only green was available?

-Slides, that enable both culturing and high-resolution microscopy of live cells.