Immune cell is one of component in blood, cent is a variety of types, wait like IGA, IGG, it is human body resists the strong weapon of foreign microbe, virus.

• 免疫细胞是血液里的成份之一，分为多种类型，如IGA、IGG等，它是人体抵御外来细菌、病毒的强有力的武器。