nonavid antibody

例句：

1. 1.The immune system produces antibodies to fight off infections.
   免疫系统产生抗体来抵抗感染。
2. 2. Antibodies are proteins that help the body recognize and neutralize foreign substances.
   抗体是帮助身体识别和中和外来物质的蛋白质。
3. 3. In some cases, a person's own antibodies can be used to treat their own condition.
   在某些情况下，一个人的自身抗体可以用来治疗他们自己的病情。