Androgen receptor (AR), estrogen receptor-alpha (ER-α) and estrogen receptor-beta (ER-β) expression in the testis of the newt, Triturus marmoratus marmoratus during the annual cycle

1. Arenas, M.I.
2. Royuela, M.
3. Lobo, M.V.T.
4. Alfaro, J.M.
5. Fraile, B.
6. Paniagua, R.