HSkMSC from Creative Bioarray are isolated from human muscle of the pectoral girdle. HSkMSC are cryopreserved at primary culture or passage one and delivered frozen. Each vial contains >5 x 10^5 cells in 1 ml volume. HSkMSC are characterized by immunofluorescent method with antibodies to myosin, actin and actinin. HSkMSC are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HSkMSC are guaranteed to further expand for 15 population doublings at the conditions provided by Creative Bioarray.