Expression of glutathione S-transferase (GST)-π and GST-α isoforms in breast cancer cell lines. Protein lysates were obtained from exponentially growing MDA-MB-231, F10, and MCF-7/COX-2 cells. Western blot analyses using polyclonal GST-π and GST-α antibodies were performed. β-actin was used as a loading control.Copyright information:Taken from "TIMP-2 mediates the anti-invasive effects of the nitric oxide-releasing prodrug JS-K in breast cancer cells"http://breast-cancer-research.com/content/10/3/R44Breast Cancer Research : BCR 2008;10(3):R44-R44.Published online 12 May 2008PMCID:PMC2481491.