title: Evolution of delayed hypersensitivity reactions in man.
mesh_terms: D000941:Antigens; D001706:Biopsy; D006659:Histoplasmin; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D012867:Skin / Q000166:cytology; D014374:Tuberculin Test; D005719:gamma-Globulins
chemical_list: D000941:Antigens; D005719:gamma-Globulins; D006659:Histoplasmin