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采用５ ％ 的鱼肝油酸钠（Ｓｏｄｉｕｍ ｍｏｒｒｈｕａｔｅ， ＳＭ） 直接注射入大鼠睾丸内， 结果发现大鼠睾丸萎缩变小； 曲细精管及间质组织完全变性坏死； 血清睾酮含量显著下降； 定量观察指标显示注射ＳＭ 大鼠的性功能基本丧失。此法操作简单， 安全有效， 可以替代动物的手术去势方法。
5% sodium morrhuate (SM) was injected directly into the testis of rats, and the testicular atrophy was found to be smaller in rats. The seminiferous tubules and interstitial tissues were completely degenerated and necrotic, the content of serum testosterone was significantly decreased. Quantitative observation Indicators show the basic loss of sexual function in rats injected with SM. This method is simple, safe and effective, can replace the animal surgical castration method.