Table 1. Summary of histological examination.
| Treatment group | Dorsolateral prostate (%) |
Ventral prostate (%) |
||||
|---|---|---|---|---|---|---|
| Hyperplasia | Dysplasia | PIN | Hyperplasia | Dysplasia | PIN | |
| G1: tumor induction | 13 (86.7) | 11 (73.3) | 5 (33.3) | 12 (80) | 10 (66.7) | 5 (33.3) |
| G2: zinc administration only | 14 (93.3) | 10 (66.7) | 7 (46.7) | 14 (93.3) | 9 (60) | 6 (40) |
| G3: zinc administration + tumor induction | 15 (100) | 13 (86.7) | 8 (53.3) | 15 (100) | 12 (80) | 7 (46.7) |
| G4: control | 7 (46.7) | 4 (26.7) | 0 | 6 (40) | 3 (20) | 0 |
Abbreviation: G, group; PIN, prostate intraepithelial neoplasia.