Fig. 8. Whole-mount in situ hybridization of muscle-specific protein mRNAs in developing cod embryos at 4°C at sequential somite stages. Patterns at 7°C and 10°C were identical (Fig. 1).MyHC, myosin heavy chain; TnT, troponin T; TnI, troponin I; CK-M, muscle creatine kinase; TnC, troponin C. Scale bar, 200 µm.