P-glycoprotein (P-gp) and multidrug resistance-associated protein 1 (MRP1) are induced by arsenic trioxide (As(2)O(3)), but are not the main mechanism of As(2)O(3)-resistance in acute promyelocytic leukemia cells.

P-glycoprotein (P-gp) and multidrug resistance-associated protein 1 (MRP1) are induced by arsenic trioxide (As(2)O(3)), but are not the main mechanism of As(2)O(3)-resistance in acute promyelocytic leukemia cells.