Proliferation assessment of porcine skeletal muscle satellite cells. CCK-8 analysis for porcine skeletal muscle satellite cells proliferation at days 1, 2, 3, 4, 5, 6 and 7. A p value of <0.05 is shown as *, p<0.01 is shown as **, and p<0.001 is shown as ***. No significance is shown as ns.