Result: Lead exposure group, cadmium exposure group and combined exposure group all had toxic symptom.

结果：铅镉单独染毒组和联合染毒组出现明显的中毒症状；

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Result: Lead exposure group, cadmium exposure group and combined exposure group all had toxic symptom.

结果：铅镉单独染毒组和联合染毒组出现明显的中毒症状；

youdao