Steady state accumulation of VLB and PBA in KB3-1 (drug-sensitive) and KB8-5 (drug-resistant) cell lines
↵3-a Values are expressed as mean ± standard error (n = number of determinations).
↵3-b Cells were loaded with [3H]VLB (37.5 nm, 0.5 μCi/ml) for 2 hr at room temperature.
↵3-c Cells were incubated with 1 μmPBA for 1 hr at room temperature.