ABO blood grouping is based on differences in the type of glycoprotein (protein with carbohydrates attached) present on the surface of red blood cells. Type A individuals have type A glycoproteins; ...

Knowing your blood type is more important than you think. Here's why and tips for finding yours before an emergency happens. Macy Meyer is a North Carolina native who graduated from UNC-Chapel ...

In the past, this typically involved identifying specific phenotypes (in particular, specific blood types) in the child and using this information to either "rule in" or "rule out" possible fathers.