A radiographic study of the human fetal spine. 2. The sequence of development of ossification centres in the vertebral column.
D005333:Fetus / Q000000981:diagnostic imaging*; D006801:Humans; D009068:Movement; D010012:Osteogenesis; D011859:Radiography; D013131:Spine / Q000000981:diagnostic imaging / Q000196:embryology*