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实验旨在观察二甲肼（ＤＭＨ）是否可使扬子鳄致癌。实验分３组；常用量实验组，２岁龄幼鳄２０条。ＤＭＨ用量每次为２０ｍｇ／ｋｇ。大剂量实验组，２岁龄幼鳄２０条，ＤＭＨ用量加倍，每次为４０ｍｇ／ｋｇ。对照组，小鼠２０只，ＤＭＨ用量与常用量实验组相同。３组均在颈部皮下注射。每周１次，共１６次。５个月后处死动物。结果发现，对照组小鼠１００％诱发大肠癌。而常用量与大剂量两实验组４０条幼鳄，无１例致大肠癌，通过致癌性试验说明扬子鳄有较强的抗癌能力
The purpose of the experiment was to observe whether dimethylhydrazine (DMH) can cause cancer in Chinese alligator. The experiment was divided into 3 groups; the commonly used experimental group was 20 young crocodile aged 2 years. The amount of DMH used was 20 mg/kg each time. In the high-dose experimental group, there were 20 2-year-old young crocodilians, and the DMH dosage was doubled, each time being 40 mg/kg. In the control group, there were 20 mice. The dose of DMH was the same as that of the commonly used experimental group. All three groups were injected subcutaneously in the neck. Once a week, a total of 16 times. Animals were sacrificed 5 months later. As a result, 100% of control mice induced colon cancer. For the 40 young crocodilians of the commonly used and high-dose experimental groups, there was no case of colorectal cancer. The carcinogenicity test showed that the Chinese alligator has strong anti-cancer ability.