primary vascular tissue

例句：

1. 1. The primary vascular tissue in the brain is responsible for transmitting oxygen and nutrients to the rest of the body.
   大脑中的初级血管组织负责将氧气和营养物质输送到身体其他部位。
2. 2.During embryonic development, primary vascular tissue forms the blood vessels that will eventually become the heart and lungs.
   在胚胎发育过程中，初级血管组织形成最终成为心脏和肺的血管。
3. 3. In some cases, abnormalities in primary vascular tissue can lead to conditions such as congenitalheart defects.
   在某些情况下，初级血管组织的异常可能导致先天性心脏病缺陷等疾病。