英语语法分析

Hemagglutinin inhibition test was performed to detect titer of antiserum.

通过血凝抑制实验检测抗血清的抗体滴度。

Hemagglutinin is a viral protein that enables the flu virus to enter host cells.

血凝素是一种病毒蛋白，能帮助流感病毒侵入宿主细胞。

We would only provide the conserved stalk-or the conserved portion-of the virus's hemagglutinin.

我们只需要提供病毒的血凝素中的保守柄——也就是不变的那部分。