The two main kinds of antigens, A and B, determine your blood type.

不会误以为是外来物， 而加以攻击。

The human blood group system is based on three different antigens: A, B, and O.

人类血型系统基于三种不同的抗原：A、B和O。

If you inherit one of each, the resulting codominance will produce both A and B antigens, which is type AB.

如果你每一种基因继承了一个，根据共显性会同时生产出A和B抗原，这就是AB型血。

If you have type A, that means your red blood cells have the A antigens.

如果您是 A 型，则意味着您的红细胞具有 A 抗原。

That person's immune system is used to seeing both A and B antigens.

该人的免疫系统习惯于同时具有A和B抗原。

If your red blood cells have both A and B antigens, then your blood type is said to be AB.

如果红细胞同时有A和B抗原，则血型就是AB型。

For example, if you have type B blood and you receive a blood transfusion of type A blood, your antibodies will work to destroy the A antigens.

例如，如果你是B型血，却输了A型血，你的抗体就会破坏A型血抗原。

Cats, on the other hand, have only two possible antigens — A and B, although they aren't the same A and B antigens found on human blood.

而猫只有两种可能的抗原——A和B，不过与人类血液中的A和B抗原不同。

If you have type A blood, your red blood cells have the A antigen, and your body will produce anti B-antibodies.

如果是A型血，红细胞有A抗原，身体会产生抗B抗体。

These immune cells recognize the antigen, a tiny piece of a virus or bacteria introduced by the vaccine that stimulates an immune response.

这些免疫细胞识别抗原，即疫苗引入的一小块病毒或细菌， 可刺激免疫反应。

If you have type AB blood, your red blood cells will have both A and B antigens, and therefore produce no antibodies.

如果是AB型血，红细胞同时有A和B抗原，因此不会产生抗体。

But because people with type AB blood produce both A and B antigens, they don't make antibodies against them, so they will recognize either as safe, making them universal recipients.

但由于AB型血的人生产A和B两种抗原，他们对A和B型血都不产生抗体，所以他们对于两种血都能安全接受，这使得AB型血的人“来者不拒”。

The Rh factor is simply a red blood cell antigen - just like the A antigen and the B antigen that are used to determine your blood type.

Rh因子只是一种红细胞抗原，就像用来确定血型的A抗原和B抗原一样。