PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16393888-15 2005 Several drug transporters, such as breast cancer resistance protein (BCRP), multidrug resistance associated proteins (MRP1, MRP2, and MRP4) are involved in the active uptake and efflux of parental oxazaphosphorines, their cytotoxic mustards and conjugates in hepatocytes and tumor cells. oxazaphosphorines 197-214 ATP binding cassette subfamily C member 2 Homo sapiens 124-128