Fig. 7. Parasagittal sections through a normal vertebra (A) and a lordotic vertebra (B), stained according to Crossmon (Romeis, 1968). (C) An enlargement of the yellow box in B. Acellular bone of the vertebral centrum is blue (A). Abbreviations: cb, chondroid bone; ft, fibrous tissue; mt, muscle tissue; nc, notochord; ns, neural spine; nt, neural tube. The asterisk indicates the position of the intervertebral ligament. Scale bar is 200 µm in A and B and 50 µm in C.