title: Myositis and collagen disease: a muscle biopsy study.
mesh_terms: D001706:Biopsy; D003095:Collagen Diseases / Q000150:complications / Q000276:immunology / Q000473:pathology*; D003882:Dermatomyositis / Q000473:pathology; D006801:Humans; D009132:Muscles / Q000473:pathology*; D009220:Myositis / Q000150:complications / Q000473:pathology*; D014657:Vasculitis / Q000150:complications / Q000473:pathology