nals, which play a prominent role in autoimmune diseases. T cells are not activated by stimulation of the receptors stimulation alone, and he also studies signals involving interactions between molecules on an antigen presenting cell and T cells. CD28, a T cell transmembrane protein that binds to molecules expressed on B cells and macrophages, initiates an unidentified signaling event which may activate genes that regulate lymphokine activity. His laboratory seeks to identify the events involved in CD28 signaling and their relative importance in T cell differentiation/activation.

The five UCSF scientists are among 72 new members and 18 foreign associates from 11 countries elected at the 14th annual meeting of the Academy. The National Academy of Sciences is a private organization of scientists, established in 1863 by a congressional act of incorporation, signed by Abraham Lincoln. It serves as an official adviser to the federal government, upon request, in any matter of science or technology.

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Contact: Wallace Ravven
wravven@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
1-May-2003

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