Under the english law a foreign sovereign has always been immune from suit in the english courts . 根据英格兰法，外国主权者是不在英格兰法院应诉的。
An antigen is any substance capable of eliciting an immune response when injected into a host animal . 抗原是任何注射于宿主动物体内都能引起免疫应答的物质。
Interferon strengthens the body's response against disease by making the immune system more effective . 干扰素应通过增强免疫系统的效用来提高机体的抗病能力。
In some cases, interferon enhances the immune system's effectiveness; in others, interferon suppresses it . 有时干扰素会提高免疫系统的功能，有时它又抑制着免疫系统。
Pep talks were for the rank-and-file, and intellectuals believed themselves immune from inspirational speeches . 鼓励话对普通老百姓是起作用的，而对知识分子来说却大可不必。
The range of immune response in a large random population of animals tends to fellow a normal distribution . 在一个随机挑选的大的动物群体中，免疫应答的强弱是呈正态分布的。
Antibodies are produced by the immune system when something foreign, such as viruses or chemicals, invades the body . 抗体是免疫系统在异物（例如病毒或一些化学物质）侵犯机体时所产生的。
Aids, acquired immune deficiency syndrome, is usually a fatal disease which leaves the body unable to ward off infection . 艾滋病获得性免疫缺损综合症是一种使人体丧失免疫能力的通常致命的疾病。
The evidence for a significant role for cell-mediated immune responses in other protozoon diseases of animal is less complete . 在动物的其它原虫性疾病中，有关细胞免疫应答的重要作用的证据尚不充足。
