A:发生免疫反应后形成沉淀或细胞集团
B:纤毛摆动把黏附的细菌以痰的形式排出体外
C:靶细胞裂解死亡
D:吞噬、处理病菌
I like teachers who are amusing and can laugh with their students.
— . I just had some rice.