Nishanth R, Ramakrishna B, Jyotsna R, Roy K, Reddy G, Reddy P, et al. C-Phycocyanin inhibits MDR1 through reactive oxygen species and cyclooxygenase-2 mediated pathways in human hepatocellular carcinoma cell line. Eur J Pharmacol. 2010;649:74-83 pubmed publisher