这种疫苗对流感的免疫效力时间较长。
成人往往对风疹有免疫力。
他的免疫系统彻底崩溃了，他已病入膏肓。
His immune system completely broke down and he became very ill.
我们的免疫系统正在杀死数以十亿计的细菌。
养在户外笼子里的鸟对空气传播的病毒有免疫力。
Birds in outside cages develop immunity to airborne bacteria.
该病人的免疫系统会将移植器官作为异物加以排斥。
The patient's immune system would reject the transplanted organ as a foreign object.
眼睛问题表明一种不健康的生活方式以及随后免疫系统所受的抑制。
Eye problems can indicate an unhealthy lifestyle with subsequent suppression of the immune system.
不管医疗科学已取得了什么样的进步，免疫系统仍是我们抵抗疾病的主要防御手段。
Despite anything the science of medicine may have achieved, the immune system is our main defence against disease.
大约93%的美国居民对麻疹是免疫的，他们要么因为接种过疫苗，要么就是小时候得过麻疹。
About 93 percent of U.S. residents are immune to measles either because they were vaccinated or they had the disease as a child.
免疫系统的工作就是抵御感染。
抗原——抗体免疫的两个重要表现是裂解。
Two important manifestations of antigen-antibody immunity are lysis.
他们对文化冲击免疫了。
目的是研究多余的水对老鼠免疫系统的影响。
The objective is to study the impact of extra water on the immune system in mice.
它还保护我们免受病毒和自身免疫性疾病的侵害。
It also protects us from viruses and from autoimmune diseases.
在脊椎动物中，免疫系统提供了对体内寄生虫的多重防御。
In vertebrates, the immune system provides a multiple defense against internal parasites.
这证明我们的免疫系统在我们衰老时确实不能很好地发挥作用。
This is evidence that our immune system really doesn't function so well when we age.
苦瓜中含有生理活性蛋白质，可以帮助提高免疫功能和预防癌症。
Bitter gourd contains a physiologically active protein that can help improve immune functions and prevent cancer.
这只是对我们的免疫系统试图防御的潜在外来入侵者的分类介绍。
Just an introduction to the classes of potential foreign invaders that our immune system tries to defend us against.
我的研究重点是随着年龄的增长，我们的免疫系统会发生什么变化。
My research focus is on what happens to our immune system as we age.
一些研究甚至表明，当我们和朋友在一起时，免疫功能会得到改善。
Some research even suggests that immune function is improved when we are around our friends.
当人们睡眠不足时，他们体内的应激激素水平会升高，造成免疫功能下降。
When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function.
可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。
It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.
身体的免疫系统变得如此脆弱，以至于人们经常因为轻微的疾病而变得非常虚弱。
So weak does the body's immune system become that the person often becomes very ill from usually mild sicknesses.
“封装能保护细胞免遭免疫系统攻击，并且会含有畸胎瘤细胞。”Weir 说。
"Encapsulation protects cells from getting killed by the immune system and would contain teratoma cells," says Weir.
在我们周围充斥着像这样的生物体，而我们的免疫系统在大多数时候能够抵御疾病。
These organisms like this are abundant in the world around us and our immune system prevents us from getting sick most of the time.
传播疾病的害虫也不甘落后，其中约有100种对目前使用的各种杀虫剂有了免疫力。
Not to be left behind are the disease-spreading pests, about 100 species of which have become immune to a variety of insecticides now in use.
压力反应会降低身体免疫系统对抗疾病的效力，从而增加对感冒和癌症等疾病的易感性。
Stress reactions can reduce the disease fighting effectiveness of the body's immune system, thereby increasing susceptibility to illnesses ranging from colds to cancer.
那样迅速的复制速度也增加了菌株进化的机会，使它们能够用种种方式避开猪的免疫系统。
That rapid replication rate also increased the chances of strains evolving in ways that allowed them to evade hog immune systems.
许多医生和研究人员认为，孤独会损害免疫系统，使我们更容易患上一系列轻微和重大疾病。
Many doctors and researchers believe that loneliness harms the immune system, making us more vulnerable to a range of minor and major illnesses.
然而，目前免疫疗法还处于试验阶段。
For the time being, however, immunotherapy is still in its experimental stages.
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