Did You Know!
Human blood is classified into different types based on the presence or absence of certain antigens and antibodies. The most well-known blood typing system is the ABO blood group system, which categorizes blood into four main types: A, B, AB, and O. Additionally, blood is also classified based on the presence or absence of the Rh factor, resulting in positive or negative blood types. This classification is crucial for blood transfusions to ensure compatibility between the donor and recipient, as mismatched blood types can lead to potentially life-threatening reactions.
