title: [Tuberculin reactions in the elementary schools of Como (from April, 1958 to April, 1961)].
mesh_terms: D002648:Child; D055633:Immune System Phenomena; D007223:Infant; D012574:Schools; D014373:Tuberculin; D014374:Tuberculin Test
chemical_list: D014373:Tuberculin
keywords: TUBERCULIN REACTION/in infancy and childhood