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Agency rejects anti-vivisectionist petition to have firms' research covered by Animal Welfare Act

had a consignment destined for overseas returned by the US Postal Service (USPS).

, you might have been momentarily forgiven for thinking you were reading a celebrity magazine.

In 1980, Stanford biologist Paul Ehrlich took up economist Julian Simon on a bet that the market price of five metals would drop over the next decade.

For most, immunity is simply there when you need it, like the umbrella sitting by the door.

The discovery that lipids can serve as antigens first stunned the immunological community a decade ago.

Though we think of them as blood cells, lymphocytes spend much of their time in distinct locations in the body.

Healthy immune systems are supposed to ignore self-molecules when looking for foreign invaders.

The ocean floor is a dark place for a photosynthetic bacterium.

These papers were selected from multiple disciplines from the Faculty of 1000, a Web-based literature awareness tool http://www.facultyof1000.com.H. Aldaz et al., "Insights into microtubule nucleation from the crystal structure of human β-tubulin," Nature, 435:523–7, May 26, 2005.The authors have determined the crystal structure of γ-tubulin bound to GTP-γ S (a non-hydrolyzable GTP analog) at 2.7 Å resolution. γ-tubulin forms part of the γ-tubulin ring complex

Researchers often use immunoprecipitation (IP) to isolate specific proteins from complex samples or to identify protein-protein interactions.

Mosaic animals, which contain somatic cells with different genotypes, allow researchers to track how mutation or deletion of target genes affects cell development.