Data from the FASEB Directory of Members and NIH were used to develop a statistical profile of the members of FASEB Societies. For the U.S.-based scientists (exclusive of retired and student members), the most frequently reported degree was a research doctorate (69.6%), A substantial fraction, however, reported medical degrees (19.2%) or both research and medical degrees (8.0%). The majority of members of FASEB Societies listed academic affiliations in the directory. Industrial affiliations were reported, however, in 9.7% of the entries with smaller fractions listing associations with hospitals, independent research institutes, and government agencies. Just over one-fourth of the members of FASEB Societies were principal investigators on NIH research grants, These investigators received one-half of all NIH grants and nearly 60% of the RO1 grants-Garrison, H. H., Lahiri, S., Stephens, D. A profile of the members of FASEB societies: NIH awards, degrees, and institutional affiliations, 1999.