Pleurodeles waltl possesses multiple testis. (a), In a three-year-old animal, a transluscent zone with early spermatogenic stages (ZES) is observed below the glandular tissue (GT). It is a second lobe (2TL) that is forming at the caudal part of the testis. (b), this new lobe contains lobules (Lo) with a central cavity and their walls are made up of cysts with proliferating germ cells (GC). (c), in a 10-year-old male 3 differentiated testis lobes (TL) are observed. The photo also shows fat body (FB), the lung (Lu), the urinary part of the mesonephros (M) and Wolfian ducts (WD).