Figure 1.

Relative mRNA abundance of the myogenic regulatory factors (A): paired box transcription factor 7 (Pax7), myogenic factor 5 (Myf5), and myogenic differentiation factor 1 (MyoD) and relative mRNA abundance of the two rate limiting steps involved in the polyamine biosynthesis pathway (B): S-adenosylmethionine decarboxylase (AMD1) and ornithine decarboxylase (ODC) from control-treated primary bovine satellite cells cultures over time. Abundance was measured 0, 2, 4, 8, 12, 24 and 48 h after treatment, as described in the Materials and Methods.