title: An exciting half century in medicine.
mesh_terms: D000328:Adult; D000900:Anti-Bacterial Agents / Q000266:history; D002170:Canada; D002648:Child; D003677:Deficiency Diseases / Q000266:history; D005060:Europe; D049673:History, 20th Century; D006801:Humans; D007239:Infections / Q000266:history; D014481:United States; D014611:Vaccination / Q000266:history
chemical_list: D000900:Anti-Bacterial Agents