| ES | estrus stage |
| DS | diestrus stage |
| PCOS | polycystic ovary syndrome |
| miRNA | microRNA |
| circRNA | circular RNA |
| lncRNA | long non-coding RNA |
| mRNA | messenger RNA |
| MMP9 | matrix metallopeptidase 9 |
| TIMP1 | tissue inhibitors of metalloproteinases |
| 3BHSD | 3β-Hydroxysteroid dehydrogenase |
| PTGIS | Prostaglandin I2 Synthase |
| HQ | high quality |