Seok Kwon

Estrogen receptors are present in the epididymis of the rooster.

J. Bahr, J. Kirby, D. Bunick, 1997, Journal of andrology.

Rooster testicular germ cells and epididymal sperm contain P450 aromatase.

J. Bahr, H. Nitta, D. Bunick, 1995, Biology of reproduction.