title: A Curmudgeon Reflects on Half a Century of Gastrointestinal Pathology.
authors.affiliation: Department of Pathology, University of Michigan, Ann Arbor, Michigan.
authors.forename: Henry D
authors.initials: HD
authors.lastname: Appelman
mesh_terms: D001706:Biopsy; D004059:Diffusion of Innovation; D019723:Endoscopes; D016099:Endoscopy, Gastrointestinal / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000639:trends; D004867:Equipment Design; D005336:Fiber Optic Technology; D005544:Forecasting; D005762:Gastroenterology / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000639:trends; D005767:Gastrointestinal Diseases / Q000266:history / Q000473:pathology*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D010336:Pathology / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000639:trends; D011237:Predictive Value of Tests