Fig. 7. Cyclopamine treatment of the regenerating axolotl limb does not affect
blastema growth but leads to digit loss. (A) The regenerated control limb 15
dpa. (B) The regenerated cyclopamine-treated limb structure 15 dpa. The arrow
in B points to the regenerated rod of cartilage. The dashed line in A and B
marks the amputation plane. Scale bar: 0.5 mm.