c er

sion age ste min t al in morphology was similar between control and treated animals at 8 months. The cauda did not show a delay in development, but was more developed in treated animals at 2 months. AR, ERa, and ERb were expressed in all three epididymal regions; no difference was observed between control and treated animals. In summary, estrogen appears to be important for development of the epididymis; however, the efferent ducts (Hess & Carnes 2004). The efferent ducts of exhibit impaired fluid reabsorption in the efferent aERKO and ICI treated mice were reduced and the sperm development derives primarily from rodent models. ductules (Robertson et al. 1999, O’Donnell et al.DOI: 10.1530/REP-06-02392001). Estrogen appears to mediate fluid reabsorption q 2007 Society for Reproduction and FertilityWhile a few studies have described the morphology o