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The frequency and ranges of the immature germinal cells (IGC) were established in 286 semen analyses from normozoospermic (group I), oligozoospermic (group 11), and azoospermic (group 111) subjects.The mean total count of IGC was greater between men from group I than between participants from groups I1 and 111. Scd spermatids were the cells most frequently observed and the spermatogonia the most unfrequently seen. Sab and Scd spermatids were the most common cells observed in group I, whereas Scd and primary spermatocytes were the most common in group 11, and Scd and secondary spermatocytes were the most common in group 111. Correlation was found between sperm concentration and the IGC total count. Significant differences were not found when epithelial cell and leucocyte concentrations were compared between groups.

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