英语语法分析

OBJECTIVE To establish a method of tretinoin quality controling.

目的建立维甲酸凝胶的质控方法。

Objective To investigate the effect of gallium salts on bone metabolism in osteoporosis rats caused by tretinoin.

目的研究镓盐对维甲酸致骨质疏松大鼠骨代谢的影响。

Objective To study the effect of tretinoin on cellular proliferation and differentiation with human osteogenic sarcoma cell.

目的探讨维甲酸对人骨肉瘤细胞抑制增殖和诱导分化的影响。