title: P-glycoprotein gene amplification or overexpression is not detected in clinical breast cancer specimens.
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000235:genetics; D004351:Drug Resistance; D005260:Female; D005784:Gene Amplification; D006801:Humans; D008562:Membrane Glycoproteins / Q000235:genetics*; D012333:RNA, Messenger / Q000032:analysis*
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D008562:Membrane Glycoproteins; D012333:RNA, Messenger