I try to grow pure myoblasts and I would like find antibody which is specific for them and works well in western blotting. I might have a problem with extra fibroblasts. Do you have any suggestions (which antibody from which company).
Perhaps you could try to mirror the methods presented here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773721/
Figure 5 shows Western data for aquaporin-1, which seems to specifically label undifferentiated myoblasts nicely. They use an aquaporin-1 antibody from Chemicon International, #AB2219. Good Luck!