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Flow cytometry. MDA-MB-468 and MDA-MB-231 breast cancer cells and CaOV3 negative control cells stained with osteopontin-conjugated CF594 succinimidyl ester dye. Osteopontin expression in MDA-MB-231 (27.6 ± 5.4, p = 0.0337), MDA-MB-468 (25.7 ± 2.5, p = 0.0161) breast cancer cells were compared to the least expressing osteopontin CaOV3 cells.
