... contains many muscle satellite cells. They are active in DNA replication, whereas the myonuclei are not. As in mammals, the satellite cells express pax7 . We show that a domain-swapped construct, pax7EnR , can antagonize pax7 function. Transgenic tadpoles were prepared containing pax7EnR driven by a heat...

... showing that a population of muscle satellite cells is derived from the embryonic vasculature (reviewed by Seale and Rudnicki, 2000 ). Fig. 1. Mitotically competent cells within the myotome first appear at the extreme edges and later scatter throughout the entire muscle mass. (A) Frontal...