Which Blood Type Is the Universal Acceptor?
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The blood type that is known as the universal acceptor is type AB. In total, there are eight different types of blood that a person can have.
Blood type is categorized based on which antigens are on the red blood cells. There are four antigens, or antigen groups: A, B, AB and O. Each of these can further be divided into positive and negative. For example, a person can have either A- blood or A+ blood. If the cells have a specific type of antigen on top of the main four, called an Rh factor, it is positive. If it is missing, the blood is negative.
