Abstract
We performed thymectomy on the immature and mature male mice and made a quantitative assay of various germ cells of the seminiferous epithelium in the testis with Image Analyser System 35 days following thymectomy. The results indicated that as compared with the control group, all germ cells of the spermatogenesis lineage decreased in the immature group and in the mature group after thymectomy. The present study showed that thymus and its hormone stimulated not only the mitotic division, but also the meiotic division of germ cells during spermatogenesis, suggesting that thymus-sexual axis may play an important role in the process of spermatogenesis in the testis.
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