Lepromin and the Arthus reaction.
D001183:Arthus Reaction; D005188:False Negative Reactions; D006801:Humans; D007916:Lepromin; D007918:Leprosy / Q000175:diagnosis* / Q000276:immunology; D009166:Mycobacterium leprae / Q000254:growth & development / Q000276:immunology
D007916:Lepromin