Study Its Biological Characteristics 研究其生物学特性
Objective To prepare anti-osteosarcoma monoclonal antibodies (McAb) and study its characteristics.
目的：制备抗人成骨肉瘤单克隆抗体并探讨其特性。
OBJECTIVE To prepare urease N-trimethyl chitosan chloride submicrospheres and study its characteristics.
目的制备尿素酶三甲基壳聚糖亚微球，并对其相关性质进行初步研究。
To understand the most important characteristics of a society, one must study its major cities.
要了解一个社会的最重要特征，人们必须研究它的主要城市。
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