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Rank scale for sperm density counts
| Rank | Description | Photomicrograph |
|---|---|---|
| 0 | No developing spermatids/sperm | Fig 1A |
| 1 | Few developing spermatids/sperm | Fig 1B |
| 2 | Several developing spermatids/sperm | Fig 1B |
| 3 | Many spermatids/sperm concentrated around the lumen | Fig 1C |
Within each seminiferous tubule, the number of developing spermatids or mature sperm was estimated and the seminiferous tubule ranked according to the following scale.
