Figure 5. Caveolin-1 is down-regulated in differentiating satellite cell progeny.
EDL myofibres were cultured in suspension for 72 hrs, by which time many begin to express myogenin as they commit to myogenic differentiation (arrows). Myogenin-containing satellite cells (green – arrowed) tended to have lower levels of caveolin-1 immunosignal (red - arrow) in their plasma membranes than uncommitted cells. Nuclei were revealed by counterstaining with DAPI (blue). Scale bar represents 20 µm.