Gene expression profiles of Syncytin-1, -2, -3, and receptor SLC1A4 as well as different muscle specific genes by qPCR and PCR of human primary myoblasts grown for 1, 2 and 4 days in growth medium (GM) and differentiation medium (DM).

The value of each gene for day 1 in GM was set as 1. Diamond: Significances (P<0.05) comparing GM and DM at different days; *: significant differences (P<0.05) between Forskolin and no Forskolin addition.