We have diffrent blood streams and there are 4 diffrent blood types and our parents have somthing to do with it
1 5 1
The Rh factor is a type of protein on the surface of red blood cells. Most people who have the Rh factor are Rh-positive. Those who do not have the Rh factor are Rh-negative.That only means positive and negative blood groups.
1 5 1