实验以ICR小鼠体外培养的囊胚及孵化胚胎为材料，比较两种方法对小鼠胚胎细胞计数的效果。
The experiment was blastocyst and hatch blastocyst of ICR mouse culture in vitro, and the effect of two methods to the cell counting of mouse embryo was compared.
方法采用体外细胞培养计数法。
Methods: In vitro culture cell number count assay was adopted.
方法体外培养MC3T3 E1成骨细胞，观察细胞的生长形态，并通过细胞计数观察低浓度氟和地塞米松对成骨细胞增殖状况的影响。
Methods Observe the growing shape of MC3T3 E1 osteoblast cultured in vitro, and investigate the effects of low dose of fluoride and dexamethasone on the proliferation of osteoblast by cell count.
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