00:02
Hi there, this question is about blood types.
00:05
And there are four basic blood types.
00:09
When we think about the whole idea of a -b -o blood types, and they're the result of antigens on the surface of the blood cells.
00:24
We know antigens are, of course, proteins that elicitum in immune response.
00:31
So if something is detected as the body, as being foreign to that body, the immune system will attack it.
00:38
So let's look at the four types of blood.
00:43
So i am going to use little red circles for antigen a and little blue circles for antigen b.
01:03
So the four types of blood we can have, we can have blood cells in an individual that have the antigen a on their surface.
01:19
This individual would be said to have type a blood.
01:25
All of their blood cells would be like this.
01:28
And that's because they have the a antigen that we call them type a.
01:35
Individuals with type b blood would have antigen b on the surface of the blood cells...