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The effects of a microtubule poison, carbendazim, on rat spermiogenesis were examined for abnormalities of nuclei, acrosome and manchette in round and elongating spermatids in Stages VII-XII on days 7.5, 9.5, 10.0 and 10.5 post-treatment using routine electron microscopy. Spermatid nuclear abnormalities were observed in Stages IX-XI on day 9.5 and at greater post-treatment intervals. Nuclear abnormalities...
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