Fig. 11. MyoD expression in 5-somite (A–C) and 35-somite (D–F) embryos at 4, 7 and 10°C. Note that the 7 and 10°C embryos are shorter than the 4°C embryos, reflecting differences in the extent of epiboly between temperature groups (Hall and Johnston, 2003). However, the expression of MyoD in relation to somite development remains constant. Scale bar, 300 µm.