RT Journal Article SR Electronic T1 Functional validation of the genetic polymorphisms of human ABC transporter ABCG2: Identification of alleles that are defective in porphyrin transport JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics DO 10.1124/mol.106.023556 A1 Ai Tamura A1 Masato Watanabe A1 Hikaru Saito A1 Hiroshi Nakagawa A1 Toshiaki Kamachi A1 Ichiro Okura A1 Toshihisa Ishikawa YR 2006 UL http://molpharm.aspetjournals.org/content/early/2006/04/11/mol.106.023556.abstract AB