目的：观察左归丸、右归丸对老年大鼠hpa轴所属组织形态结构变化的影响。
Objective: To observe the effect of Zuogui pill and Yougui pill on the morphologic changes of HPA axis organisms in senile rat.
病理切片检查显示正常组的大鼠肝组织形态结构正常，肝小叶规则，无脂滴发现；
The pathology slice examination shows: the liver tissue organization of the rats in normal comparison group is normal and the hepatic lobules of them are well-arranged without liquid droplets;
目的：研究长期低硒、低碘饲料喂养对子代发育期大鼠甲状腺组织形态结构以及PCNA表达的影响。
Objective: to study the effects of longtime selenium (se) and iodine (I) deficiency on histomorphology and PCNA expression of thyroid gland of rat at development stage.
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