Fig. 5. Transverse sections of a 9.5 dpc (26 somite) y200
E-Myf5-nlacZ transgenic embryo stained for ß-galactosidase. At this stage no transgene expression can be seen in the dermomyotome. Transgene expression starts in the epaxial half of the myotome of somite VII (arrow in So VII). The staining extends further epaxially and hypaxially in the consecutive somites until it occupies the entire length of the myotome (So IX-XII).