The American Association of Pathologists and Bacteriologists (AAPB) was an American national professional association established in 1901, devoted to fundamental science and academic medicine as distinct from clinical medicine. In 1976, they joined with the American Society for Experimental Pathology (ASEP) to form the American Association of Pathologists (AAP), which in 1992 became the American Society for Investigative Pathology (ASIP).