In the paper “Cannabinoid receptor type 1 (CB1) activation inhibits small GTPase RhoA activity and regulates motility of prostate carcinoma cells” by Nithipatikom K, Gomez-Granados AD, Tang AT, Pfeiffer AW, Williams CL, Campbell WB (Endocrinology, 153:29–41, 2012), the authors report that Western blot in Figure 4B was incorrect due to an author error. The correction does not alter the results. The corrected figure is posted below. The authors apologize for the error.

