Human Choroid Plexus Endothelial Cells (HCPEC) from Creative Bioarray are isolated from human brain. HCPEC are cryopreserved after purification and delivered frozen. Each vial contains >5 x 10^5 cells in 1 ml volume. HCPEC are characterized by immunofluorescent method with antibodies to VWF/Factor VIII, CD31(PCAM) and by uptake of DiI-Ac-LDL. HBMEC are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HCPEC are guaranteed to further expand for 15 population doublings in the condition provided by Creative Bioarray.