HUVSMC from Creative Bioarray are isolated from human umbilical veins. HUVSMC are cryopreserved at the end of secondary culture and delivered frozen. Each vial contains >5 x 10^5 cells in 1 ml volume. HUVSMC are characterized by immunofluorescent method with antibodies to ?-smooth muscle actin and desmin. HUVSMC are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HUVSMC are guaranteed to further expand for 15 population doublings at the condition provided by Creative Bioarray.