musculin : a murine basic helix-loop-helix transcription factor gene expressed in embryonic skeletal muscle .
musculin : a murine basic helix-loop-helix transcription factor gene expressed in embryonic skeletal muscle .
B-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-tissue I-tissue I-tissue O