title: A radiographic survey of nine pairs of elderly identical twins.
mesh_terms: D000375:Aging; D001168:Arthritis / Q000000981:diagnostic imaging / Q000235:genetics; D001175:Arthrography; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D002114:Calcinosis / Q000000981:diagnostic imaging / Q000235:genetics; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D004200:Diseases in Twins / Q000000981:diagnostic imaging; D005260:Female; D005528:Foot / Q000000981:diagnostic imaging; D006225:Hand / Q000000981:diagnostic imaging; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging; D011247:Pregnancy; D012272:Ribs / Q000000981:diagnostic imaging; D012886:Skull / Q000000981:diagnostic imaging; D013157:Splenic Artery / Q000000981:diagnostic imaging; D014427:Twins