In fact, they create anti-A antibodies to stand guard and keep the As away.

事实上，它们能产生抗-A抗体来保护和阻止A。

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

如果是B型血，红细胞会有B抗原，身体会产生抗A抗体。

Your body would form antibodies against A antigens, called anti-A antibodies, and this mixing could lead to clumping or agglutination of the blood.

身体会形成对抗抗原的抗体，称为抗-A抗体，这种混合可能导致血液凝结或凝集。

This is a very good thing, if you think about it, because if you had type A antigens on your red blood cells, and your body formed anti-A antibodies, they would destroy your own blood.

思考，这是一件非常好的事情，因为如果您的红细胞上有A型抗原，并且您的身体形成了抗A抗体，它们会破坏您自己的血液。