title: Progress in leprosy.
mesh_terms: D000937:Antigen-Antibody Reactions; D001803:Blood Transfusion; D006801:Humans; D006968:Hypersensitivity, Delayed; D007109:Immunity; D007153:Immunologic Deficiency Syndromes / Q000209:etiology; D007918:Leprosy / Q000276:immunology* / Q000628:therapy; D007962:Leukocytes / Q000276:immunology*; D009166:Mycobacterium leprae / Q000276:immunology; D012882:Skin Tests