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Innervation of the zebrafish skin in the trunk and tail. TEM images of the wild-type zebrafish epidermis in the trunk at 48 hpf (A) and the tail fin at 72 hpf (B). P, peridermal cell; B, basal cell; arrowheads indicate basement membrane; arrows point to axon profiles between the periderm and basal cell layers. Scale bars = 1 μm in A; 0.5 μm in B.
