Downregulation of MDR1/P-glycoprotein preceeds overt acute promyelocytic leukemia in PML-RAR'alfa' transgenic mouse models - Calado, Rodrigo T.; Pintao, Maria Carolina T.; Falcão, Roberto Passetto; Pandolfi, Pier P.; Rego, Eduardo Magalhães (Annual Meeting of the American Society of Hematology, 2002)