Fig. 5 Blood fate is first expanded and then reduced upon progressive loss of BMP activity. gata1 expression at 10 somites in embryos from a cross between a triple bmp heterozygote and a bmp4st72 heterozygote. (A) Wild-type phenotype exhibited by a bmp4st72 heterozygote. Expansion of the gata1 expression domain ventral to the tailbud is evident in a bmp4st72 homozygote (B) and a bmp4st72/bmp4st72; snhty68a/+ embryo (C). Reduction of the gata1 expression domain is observed upon further reduction of BMP, as in these bmp4st72/bmp4st72; swrta72/+ (D) and bmp4st72/bmp4st72; snhty68a/+; swrta72/+ (E) embryos, although ectopic gata1 expression ventral to the tailbud is still apparent.
Reprinted from Developmental Biology, 310(1), Stickney, H.L., Imai, Y., Draper, B., Moens, C. and Talbot, W.S., Zebrafish bmp4 functions during late gastrulation to specify ventroposterior cell fates, 71-84, Copyright (2007) with permission from Elsevier. Full text @ Dev. Biol.