英语语法分析

In this paper, we described the safety standards of keratinocyte culture in vitro.

文章系统阐述了表皮细胞体外培养的安全性标准。

In this study, we investigated the cytotoxic effect of lactic acid on human keratinocyte cell line.

故在本篇研究中，我们想去调查乳酸是否会对人类皮肤角质细胞产生细胞毒性作用。

Objective To explore the mechanism of wound healing and the characteristic of keratinocyte migration.

目的探索表皮创伤早期愈合的机制及角朊细胞游走的特点。