The problem of the Kveim test.
D000941:Antigens; D003424:Crohn Disease / Q000175:diagnosis / Q000276:immunology; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D008198:Lymph Nodes; D008206:Lymphatic Diseases / Q000276:immunology; D012507:Sarcoidosis / Q000276:immunology*; D012882:Skin Tests; D013154:Spleen / Q000276:immunology
D000941:Antigens