title: Ultrastructure of spermatogonia, spermatocytes, and sertoli cells in the testis of the crayfish, Procambarus paeninsulanus.
abstract: The testes of the crayfish, Procambarus paeninsulanus, were prepared for light and transmission electron microscopy. During early stages of spermatogenesis, when the spermatogonia are dividing, processes from a single Sertoli cell extend between numerous spermatogonia. As the cells enter meiosis, many points of contact can be observed between the Sertoli cell processes and spermatocytes. These desmosome-gap junctions are maintained between the germ and Sertoli cells until the early spermatid stage.
authors.affiliation: Department of Biology, U. South Florida, Tampa, Fl. 33620-5150, USA.
authors.forename: G W
authors.initials: GW
authors.lastname: Hinsch