造血的

This study was to investigate the in situ localization of tissue type plasminogen activator in pulpal disease.

胞浆素原活化剂主要含有组织型(tissue-type plasminogen activator，简称t-PA)及尿激型(urokinase-type)的胞浆素原活化剂。

In Chapter 1, we introduce the background of the problem and give the main results of this paper.

第一章介绍了本文问题的历史起源和背景，并给出了本文的主要结果。