Fig. 4. vps18 is required for pigment formation. (A) Day 2
hi2499A mutants and vps18 are not pigmented.
(B-E) The day 5 epithelium of the skin (B,C) and the retina (D,E) is darkly
pigmented in wild-type embryos (B,D), whereas vps18 mutants (C,E)
have sparse pigment granules (arrows). Scale bar: 5 µm.