Fig. 8.

Dopa staining in the 5-day regenerating tail in the mutant (amputated at stage 49). a,b The mutant regenerating tail before dopa staining observed under transmitted light (a), or incident light (b). c The mutant regenerating tail after dopa staining observed under transmitted light. Dashed lines indicate the amputation level. White pigment cells were appearing in the mutant regenerating tail on day 5 post-amputation (b). Dopa staining was observed in white pigment cells (arrowheads) as well as melanophore precursors which were not visible under transmitted light or incident light before dopa reaction (arrows)