In primary viremia the virus infects a part of immune system in the liver and spleen, called the reticuloendothelial system, which is made of phagocytic cells.

第一次病毒血症中，病毒入侵肝脾的部分免疫系统，即由巨噬细胞组成的网状内皮系统。

Eosinophils are also phagocytic, and they're best known for fighting large and unwieldy parasites because eosinophils are much larger than neutrophils and have receptors that are specific for parasites.

嗜酸性粒细胞同样具有吞噬作用，它们以对抗巨大而笨重的寄生虫而闻名，因为嗜酸性粒细胞要比中性粒细胞大得多而且有专门针对寄生虫的受体。

When bacteria or viruses enter the body in sufficient numbers to overcome these phagocytic cells at the site of local infection, the next line of defense consists of lymphocytes.

当细菌或病毒以足够的数量进入体内以克服局部感染部位的这些吞噬细胞时，下一道防线由淋巴细胞组成。

Next up are the monocytes, macrophages, and dendritic cells, which are phagocytic cells - they gobble up pathogens, present antigens, and release cytokines - tiny molecules that help attract other immune cells to the area.

接着是单核细胞、巨噬细胞和树突状细胞，三者都是吞噬细胞；它们大口吃病原体，呈递抗原，并释放细胞因子（即帮助号召其他免疫细胞救兵来到局部的微小分子）。