Fig. 3. oep and fgf8 interact in vivo in the formation of mesoderm. (A,D,G,J) Lateral views of live embryos at 30 hours of development, taken from the progeny of Zoep;ace double-heterozygous parents. The genotype, which is inferred from the phenotype and statistical analysis, is indicated at the top right. (B-C,E-F,H-I,K-L) Lateral views of fixed embryos at 30 hours of development taken from the progeny of Zoep;ace double-heterozygous parents. The genotype, inferred from the phenotype and statistical analysis, is indicated top right. myoD or myosin heavy-chain (myhz1) staining in blue (the probe is indicated bottom left). (M,P) Dorsal view of embryos in K,L, respectively, note the bilateral staining. (N,O) Higher magnification of the embryos in K,L, respectively.