A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.

During a nationwide severe blood shortage, the American Red Cross of Southern Nevada has shed some light on which blood types ...

Most people don’t spare a thought for their blood type unless they’re in need of a transfusion — but could yours hold secrets to your health? There are four main blood types: A, B, AB and O.

Several genes with varying inheritance patterns are involved in determining your blood type. The most significant gene is the ABO gene which determines your ABO blood type. Like many of your physical ...

WAUSAU, Wis. (WSAW) - The Wausau Community Blood Center says there is a critical need for Type O blood throughout the country. The American Red Cross says Type O-Negative blood is the most common ...