title: Tribute to Harold Leroy Stewart scientist emeritus, Registry of the Experimental Cancers, National Cancer Institute.
authors.affiliation: Registry of Experimental Cancers, National Cancer Institute, Bethesda, MD 20892.
authors.forename: S L
authors.initials: SL
authors.lastname: Cohen
mesh_terms: D049673:History, 20th Century; D009316:National Institutes of Health (U.S.) / Q000266:history; D009374:Neoplasms, Experimental; D010336:Pathology / Q000266:history; D012042:Registries / Q000266:history; D014481:United States