“…In the cytoplasm of the nurse cells numerous irregular cisternae of R.E.R, Golgi fields, mitochondria and vesicles with heterogeneous content are present thus clearly demonstrating their secretory activity. In parallel to the secretion activity, the nurse cells are protagonists of an intense phagocytosis of the residual fragments of spermatids cytoplasm, demonstrated by the presence in their cytoplasm of numerous heterophagic vacuoles and multilamellar bodies; an activity, this, common to the Sertoli cells of vertebrates (Grier, 1993;Morales and Clermont, 1993;Pudney, 1993;Chung, 2008;Lebelo and van der Horst, 2010;) and invertebrates (De Jong-Brink et al, 1977;Blades-Eckelbarger and Youngbluth, 1982;Buckland-Nicks and Chia, 1986;Hinsch, 1993a,c;Gabala, 2006). The substances derived from these phagocytized bodies are believed to be used as nutrients to spermatogenic cells (Morales and Clermont, 1993;Pudney, 1993;Hinsch, 1993a,b,c;Guraya, 1995).…”