Fig. 3From: Metformin exerts anti-AR-negative prostate cancer activity via AMPK/autophagy signaling pathwayMetformin reduced the migration and invasion of AR-negative prostate cancer cells. a, b The scratch assay showed reduced migration ability of prostate cancer cells. c, d The invasion of prostate cancer cells was assessed with Transwell assay. **p < 0.01; ***p < 0.001 compared with the control groupBack to article page