Without a first line of defense--innate immunity--mammals would succumb to pathogens still unrecognized by B and T cells.
失去一线防御——非特异性免疫——哺乳动物就只好屈服于那些尚未被B细胞和T细胞所识别的病原体了。
2
If this happens, the healthy balance in white cells of Lymphocyte, Granulocyte and Macrophage breaks down, and our defense mechanism loses its ability to fight.
如果发生这种情况，在淋巴细胞，粒细胞和巨噬细胞白细胞健康平衡打破了，我们的防御机制丧失其战斗能力。
3
Scientists at the bioengineering company Arteriocyte had a DARPA contract (Defense and Research Projects Agency) to engineer red blood cells, a process called pharming.