Fig. 6

Fig. 6 bmp expression is unaffected in bmp4 mutants. bmp4 (A, B, E, F) and bmp2b (C, D, G, H) expression in bmp4^st72 mutants and wild-type siblings at bud stage (A–D) and 24 hpf (E–H). bmp4 and bmp2b expression in bmp4^st72 mutants (B, D) is similar to that seen in their wild-type siblings (A, C) at bud stage. At 24 hpf, a gap in the bmp4 and bmp2b expression patterns is apparent in the ventral tail fin (arrowheads) in bmp4^st72 mutants (F, H). However, expression in other regions is unaffected, suggesting that the absence of staining is more likely due to the lack of ventral tail fin fate than a direct effect on expression levels. Panels A–D are lateral views with dorsal to the right; panels E–H are lateral views with anterior to the left.