title: Subtle clues to diagnosis by immunopathology. Leukocytoclastic vasculitis.
mesh_terms: D001183:Arthus Reaction / Q000276:immunology; D005455:Fluorescent Antibody Technique; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D007074:Immunoglobulin G / Q000032:analysis; D012871:Skin Diseases / Q000276:immunology* / Q000473:pathology; D014657:Vasculitis / Q000276:immunology* / Q000473:pathology
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G