Did You Know!
Human blood can be categorized into different blood types, primarily based on the presence or absence of antigens and antibodies in the blood. The most well-known blood type classification system is the ABO system, which categorizes blood into four main types: A, B, AB, and O. Another critical factor is the Rh factor, which further divides blood into positive (+) and negative (-) types. The combination of ABO and Rh factors determines an individual’s blood type, influencing compatibility for blood transfusions.
