Figure 7: Co-relative expression patterns of MyHC and myogenin during embryonic development in S. chustsi. Both MyHC and myogenin mRNA expression were assayed for seven typical embryonic development stages in parallel with whole mount in situ hybridization. The upper panel shows myosin heavy chain (MyHC) expression and the lower panel is the myogenin expression pattern. 1, Gastrula (3 hpf); 2, 3 somite stage (14 hpf); 3, 7 somite stage (18 hpf); 4, 12 somite stage (24 hpf); 5, 48 somite stage (36 hpf), 6, Hatching stage (48 hpf) and 7, Free swimming fry (50 hpf). Embryos are viewed as anterior to the up, and all are at the same magnification (×100). Scale bar = 100 μm.