Originally Posted by Queen Fool

They let you?

We had to use fake blood because of legal issues:(

Hm. This was a college class and the whole project was optional; it might be a different situation if there are minors involved?

@ robard, we did that in my college biology/evolution class too.. I was one of the two chickens who refused to do it xD

This is so sad I am 34 and have no clue

I'm AB-

:3

I was in hospital when I was seven because I had major kidney problems so at first I had to get all sorts of blood tests and that was when I found out I was an AB+

I know what blood type I am, just not sure if I'm negative or positive! D: What's the difference anyways? O:

I love how most people don't know. XD

Originally Posted by Arikana

I know what blood type I am, just not sure if I'm negative or positive! D: What's the difference anyways? O:

Like ABO type, it has to do with which antigens are present on your red blood cells. Since + blood contains antigens not found in - blood, - individuals can't get transfusions from + ones, because they will form antibodies against the blood.
(The less easily avoided issue is complications during pregnancy, which can arise if a - mother who already has antibodies against + blood carries a + fetus.)