Polyarteritis nodosa in two siblings.
D006801:Humans; D006967:Hypersensitivity / Q000235:genetics; D007223:Infant; D007231:Infant, Newborn; D008180:Lupus Erythematosus, Systemic / Q000235:genetics; D008297:Male; D010375:Pedigree; D010488:Polyarteritis Nodosa / Q000235:genetics* / Q000473:pathology