HTonEpiC from Creative Bioarray are isolated from human normal tonsil tissue. human tonsil cells are cryopreserved at passage one culture and delivered frozen. Each vial contains >5 x 10^5 cells in 1 ml volume. HTonEpiC are characterized by immunofluorescent method with cytokeratine antibodies. HTonEpiC are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HTonEpiC are guaranteed to further culture at the conditions provided by Creative Bioarray.