Fig. 3

Blastema dimensions and amputation level are dependent on day 15 and independent by day 21. a. Sketch defining heights H1, H2 and lengths L1, L2 of blastemas measured from the last visible myotome to the tail tip, and from the tip of the cartilage rod to the tail tip, respectively. b–c. Values shown are the mean measurements of at least six animals (two independent experiments from that shown in Fig. 2); error bars represent standard deviations from the mean. b. On day 15, all blastema dimensions are significantly different between proximal and distal amputations (results of t-tests given above each data pair). c. There are no significant differences between the dimensions of blastemas from proximal and distal amputations at day 21