CONCLUSION: Crude realgar could induce significant liver oxidative injury, which could be reduced by purified realgar. Soluble arsenic salt may be major toxic ingredient.

结论天然雄黄可导致小鼠肝损伤，酸化精制后对肝脏毒性显著降低，雄黄毒性成分可能为可溶性砷盐。

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In polluted urban areas, they also enhance production of ozone, a key ingredient of smog that is potentially toxic to animal and plant life.

在受污染的市区，他们还促进臭氧的产生，臭氧是对动物和植物生命有潜在毒性的烟雾的关键成分。

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FDA preliminary testing on product samples also revealed a compound that appears to be diethylene glycol (DEG), an ingredient used in antifreeze, which may be toxic if ingested.

美国FDA对产品样本初步检测还发现了一种化合物，似乎是二甘醇(DEG)，是防冻液的成分，如果摄入可能有毒。

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Federal officials have also issued recent warnings about lead paint in toy trains, defective tires and toothpaste made with diethylene glycol, a toxic ingredient commonly found in antifreeze.

NPR: Chinese Seafood on List of Questionable Products