| D | Diestrus |
| P | Proestrus |
| E | Estrus |
| M | Metestrus |
| LE | Luminal epithelium |
| GE | Glandular epithelium |
| S | Stroma |
| IHC | Immunohistochemistry |
| E2 | Estrogen |
| P4 | Progesterone |
| ER | Estrogen receptor |
| ICI | ICI 182,780 |
| PR | Progesterone receptor |
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