title: Hypocomplementemia in keratoacanthoma.
mesh_terms: D000368:Aged; D003165:Complement System Proteins / Q000172:deficiency*; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000276:immunology*; D008297:Male; D008875:Middle Aged
chemical_list: D003165:Complement System Proteins