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    Article

    Spermatogenesis and its endocrine regulation

    Three major phases compose spermatogenesis: mitotic proliferation of spermatogonia, meiosis of spermatocytes, and spermiogenesis, the restructuring of spermatids into flagellated spermatozoa. The process is fu...

    Rüdiger W. Schulz, Takeshi Miura in Fish Physiology and Biochemistry (2002)

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    Specific binding of 11-ketotestosterone in an androgen target organ, the kidney of the male three-spined stickleback,Gasterosteus aculeatus

    The kidney of male three-spined stickleback,Gasterosteus aculeatus, hypertrophies during the breeding season and produces a “glue” which is used in the building of the nest. This hypertrophy is androgen dependent...

    Staffan Jakobsson, Ian Mayer, Rüdiger W. Schulz in Fish Physiology and Biochemistry (1996)

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    Testicular responsiveness to gonadotropic hormonein vitro and Leydig and Sertoli cell ultrastructure during pubertal development of male African catfish (Clarias gariepinus)

    The gonadotropin (GTH)-stimulated testicular androgen secretionin vitro and the ultrastructure of Leydig and Sertoli cells was studied during the pubertal development in male African catfish. Testicular weight in...

    Rüdiger W. Schulz, Karlien Lubberink in Fish Physiology and Biochemistry (1996)