To study the subchronic toxicity to mice caused by the oxidized product of paraphenylenediamine(PPD).

研究氧化型染发剂主要成分对苯二胺（PPD）氧化产物经皮吸收后对小鼠的亚慢性毒作用。

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To study the subchronic toxicity to mice caused by the oxidized product of paraphenylenediamine(PPD).

研究氧化型染发剂主要成分对苯二胺（PPD）氧化产物经皮吸收后对小鼠的亚慢性毒作用。

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