pubmed-article:20369487 | pubmed:abstractText | To investigate the relationship of cyclooxygenase-2 (COX-2), p-glycoprotein(P-gp), glutathione S-transferase-pi (GST-pi), and topoisomerase II alpha (Topo II alpha) to chemosensitivities in gastrointestinal tract carcinomas. | lld:pubmed |