The proliferation of spermatogonia in normal and pathological human seminiferous epithelium: an immunohistochemical study using monoclonal antibodies against Ki-67 protein and proliferating cell nuclear antigen

The quantitative distribution pattern of Ki-67 protein and proliferating cell nuclear antigen (PCNA) immunoreactivity was studied in human testis biopsies. In normal seminiferous epithelium Ki-67 is expressed in nuclei of spermatogonia, while PCNA additionally occurs in nuclei of primary spermatocyt... View More