The 8 Types of Blood
| Blood Type | Percent of US population | |
O |
Rh-positive. |
38 |
O |
Rh-negative |
7 |
A |
Rh-positive |
34 |
A |
Rh-negative |
6 |
B |
Rh-positive |
9 |
B |
Rh-negative |
2 |
AB |
Rh-positive |
3 |
AB |
Rh-negative |
1 |
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