克隆形成实验观察细胞生物学性状的变化。
The biological behavior changes of the cells were observed by colony formation assay.
目的研究第三恒磨牙来源的人牙髓干细胞的表型和生物学性状。
Objective To isolate and identify human dental pulp stem cells from third molars.
目的：研究O抗原“缺失”的宋内志贺菌其它生物学性状的变化情况。
Objective:To study the other properties of Shigella sonnei with "no" O antigen.
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