Figure 2.

The effect of finasteride on the regrowth of the ventral, lateral, and dorsal rat prostate. The ventral, lateral, and dorsal prostate were dissected from the following groups of rats: C7 = 7-day castrated; C7T2 = 7-day castrated followed by additional 2-day implantation with silastic tubing containing 0.75-cm length of testosterone and treatment with vehicle without finasteride; C7T2+F = 7-day castrated followed by additional 2-day implantation with silastic tubing containing 0.75-cm length of testosterone and treatment with finasteride; C7T7 = 7-day castrated followed by additional 7-day implantation with silastic tubing containing 0.75-cm length of testosterone and treatment with vehicle without finasteride; C7T7+F = 7-day castrated followed by additional 7-day implantation with silastic tubing containing 0.75-cm length of testosterone and treatment with finasteride. The finasteride treatment was initiated 1 day prior to the implantation of the silastic tubing.