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Involvement of EP receptors in breast cancer metastasis. A. Mice were injected with MB-231 and MB-231-EP2 clone in NOD-SCID mice. Tumor volume was measured every 7 days, and metastatic tumors were monitored using in vivo imaging system. B. Immunostaining of EP receptors were performed in primary tumor and metastatic tumor tissues. ***P<0.001 is considered as statistically significance.
