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Fig. 8 Expression pattern of snail2 in wild-type and spadetail (sptb104) mutant embryos at the end of gastrulation and beginning of somitogenesis. (A, C, E) Wild-type embryos and (B, D, F) sibling spadetail mutant embryos in dorsoposterior views. (A, B) Embryos at the end of gastrulation; (C, D) embryos at bud stage; (E, F) embryos at the two-somite stage. Labeled adaxial cells (ad) lining the notochord territory are observed only in wild-type embryos. The posterior limits of the snail2 expression domain in the lateral and paraxial cephalic mesendoderm are indicated by open arrows and are closer to the margin (arrowheads in A and B) or the tail bud (tb) in spadetail mutant embryos than in wild type. Neural crest labeling (indicated by arrows in E and F) appears identical in wild-type and mutant embryos. Scale bar, 25 μm.
Reprinted from Developmental Biology, 172, Thisse, C., Thisse, B., and Postlethwait, J.H., Expression of snail2, a second member of the zebrafish Snail family, in cephalic mesendoderm and presumptive neural crest of wild-type and spadetail mutant embryos, 86-99, Copyright (1995) with permission from Elsevier. Full text @ Dev. Biol.