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Demonstration of BCRP-specific efflux using FTC, GF120918, and PGP-4008 in SV40-HCEC. Monolayers of SV40-HCEC were incubated with [3H]-MTX (0.05 μCi/ml) under ATP-depleting conditions, and complete medium was added with and without inhibitor. The medium was analyzed after 1 hr. Each data point is representative of mean ± SD of three determinations. Statistical significance was measured by two-factor ANOVA. *p ≤ 0.05; **p ≤ 0.01.
