ECG inhibited the migration of prostate cancer cells   (A) CCK8 assays showed that 100 μg/l ECG had no regulatory effect on the viability of PC3 and 22RV1 cells. (B) Wound healing assays indicated that 100 μg/l ECG decreased the migration of PC3 and 22RV1 cells. (C) Transwell assays confirmed the inhibitory effect of ECG on the migration of prostate cancer cells. All the photographs were taken at the magnification of 100 ×. *P < 0.05, **P < 0.01.