| CT | Cryptorchidism |
| DEG | Differentially expressed gene |
| LE | Large epididymis |
| LT | Large testis |
| MSY | Male-specific region of the Y chromosome |
| NT | Normal testis |
| PCA | Principal component analysis |
| PP | Prepubertal |
| SE | Small epididymis |
| SM | Sexually mature |
| ST | Small testis |
| TPM | Transcripts per million |