Fig. 2. Effect of curcumin on the expression of prostate-specific antigen (PSA). (A) PSA activity was determined by enzyme-linked immunosorbent assay. Values are shown as the mean±standard error of the mean for all samples in each group. (B) Calculation of PSA doubling time (DT). The solid line and cross mark inside the rectangle indicate the median and the mean of the sample distribution, respectively. The average PSA DT in the curcumin group was roughly twice that in the control group, although the difference was not statistically significant (p=0.150).
