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Fig. 4. Enhanced basal keratinocyte proliferation in hai1a mutant
embryos occurs subsequent to epidermal cell aggregation. (A-D)
Confocal images of ventral yolk epidermis of wild-type siblings (WT; A,C) and
hai1a mutants (B,D) at 24 hpf (A,B) and 48 hpf (C,D), after BrdU
labeling of proliferating cells (green) and anti-p63 immunolabeling of basal
keratinocytes (red).