主要观察指标（MAIN OUTCOME MEASURES）：动态观察铅对大鼠的一般毒性，原子吸收法检测不同时间点各组大鼠血及脑匀浆铅水平，HE染色和尼氏体染色观察各组大鼠海马组织病...
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主要观察指标：隐睾的形态学变化，精原干细胞分选结果。
MAIN OUTCOME MEASURES: the morphological changes of cryptorchidism, and the sorting results of spermatogonial stem cells.
主要观察指标：观察各组大鼠丘脑钙积聚与神经元损害的分布和程度。
MAIN OUTCOME MEASURES: Distribution and degree of calcium accumulation and neuronal damage in the thalamus of rats in each group.
主要观察指标：抑郁、焦虑与脑梗死患者躯体因素及社会因素的相关性。
MAIN OUTCOME MEASURES: Correlation among depression, anxiety, physical factor and social factor of patients with cerebral infarction.
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