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Schematic summary of estrogen receptor (ER) and P450 aromatase localizations in the testis of Amphibians, Reptiles and Birds. (A–C): Immunolocalization of P450 aromatase in Podarcis sicula. Signal has been localized: (A) spermatogonia (SPG) and Sertoli cells (SC); (B) Leydig cells (LC); (C) spermatocytes (SPC), spermatids (SPT), and spermatozoa (SPZ) (from [41]). Scale bars = 5 µm.
