Federation of American Societies for Experimental Biology (FASEB)
http://www.faseb.org/
Includes links to member societies:
   American Society for Biochemistry and Molecular Biology (ASBMB)
   American Society for Investigative Pathology
   American Society for Nutritional Sciences (ASNS)
   The American Association of Immunologists (AAI)
   The American Society for Cell Biology (ASCB )
   American Association of Anatomists
   The Protein Society
   American Society for Bone and Mineral Research
   American Society for Clinical Investigation