英语语法分析

Fetal liver is the main hemopoietic tissue at middle and late fetus.

胚胎肝是胚胎中后期的主要造血组织。

The spleen and head kidney are the major hemopoietic organs in fish.

鱼类脾脏、头肾是机体造血的主要器官。

Obiective:To study the influence of dysbacteriosis on mice's hemopoietic factor.

目的：观察肠道菌群失调后小鼠造血因子水平的变化。