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Fig. 11. L-dopa staining for tyrosinase activity reveals fewer melanoblasts in D. nigrofasciatus compared with in D. rerio. Shown are larvae during middle stages of pigment pattern metamorphosis before (A,C) and after (B,D) incubation with L-dopa. (A,B) In D. rerio, melanoblasts are revealed by new melanin deposition (arrowheads show locations of cells before and after incubation). (C,D) In D. nigrofasciatus, few melanoblasts are revealed in general, and no new cells are observed in the region shown.





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