title: Chronic leg ulceration? Connective tissue defect.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003094:Collagen / Q000032:analysis; D003095:Collagen Diseases / Q000150:complications*; D004535:Ehlers-Danlos Syndrome / Q000175:diagnosis; D005260:Female; D006801:Humans; D007871:Leg Ulcer / Q000175:diagnosis / Q000209:etiology*; D012867:Skin / Q000032:analysis
chemical_list: D003094:Collagen