Take the experimental rats into 8 groups including 3 groups for therapeutic dose,3 groups for toxic dose and 2 groups for lethiferous dose, with 10 rats for each group and male and female for half.

 
  • 将实验小鼠(幼年)分成8组,其中治疗剂量3组,中毒剂量3组,致死剂量2组,每组10只,雌雄各半。
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