PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20739156-6 2011 The results showed that among these three isolated alkaloids; stemofoline exhibited the most potent effect in vitro in the reversal of P-gp-mediated MDR. stemofoline 62-73 phosphoglycolate phosphatase Homo sapiens 135-139