Table 2 Johnsen scoring system used for testicular damage evaluation.
From: β-Glucan and resveratrol mitigate lead induced reproductive toxicity in male mice
Johnsen score | Description of histological criteria |
|---|---|
10 | Full spermatogenesis |
9 | Slightly impaired spermatogenesis, many late spermatids, disorganized epithelium |
8 | Less than five spermatozoa per tubule, few late spermatids |
7 | No spermatozoa, no late spermatids, many early spermatids |
6 | No spermatozoa, no late spermatids, few early spermatids |
5 | No spermatozoa or spermatids, many spermatocytes |
4 | No spermatozoa or spermatids, few spermatocytes |
3 | Spermatogonia only |
2 | No germinal cells, Sertoli cells only |
1 | No seminiferous epithelium |
