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Fig. 6. Vertebral homeotic transformations in the posterior thoracic and
lumbosacral region of OE mice compared with wild type. (A,B)
Dorsal views; numbers indicate the most anterior vertebrae bearing ribs, most
posterior vertebrae bearing ribs and the first sacral vertebrae. (C-F)
Ventral views; numbers indicate the most anterior vertebrae bearing ribs, most
posterior vertebrae with ribs attached to sternum, and most posterior
vertebrae bearing ribs. f, fused ribs. A, C and
Fig. 5A show different views of
the same skeleton.