after incubation for 24 h with lipoprotein-depleted serum ( which induces ldl receptor synthesis ) , and then incubation for 24 h with an increasing amount of ldl ( from 10 to 250 micrograms of protein per ml ) , the tocopherol contents of normal fibroblasts increased in a saturable fashion from 19 to 103 ng of tocopherol per mg cell protein .
C0016030
fibroblasts
C0007634
cell