Blood type AB has no antibodies.
Understanding Blood Types and Antibodies
Blood types are categorized based on the presence or absence of specific antigens on the surface of red blood cells. These antigens trigger an immune response if introduced into a body that doesn't naturally possess them. Antibodies are proteins produced by the immune system to defend against foreign substances. The interaction between antigens and antibodies is crucial for blood compatibility.
- Blood type A: Contains A antigens and anti-B antibodies.
- Blood type B: Contains B antigens and anti-A antibodies.
- Blood type O: Contains neither A nor B antigens but has both anti-A and anti-B antibodies.
- Blood type AB: Contains both A and B antigens but no antibodies. This makes it a universal recipient, able to receive blood from all other types.
The reference material explicitly states: "blood group AB – has both A and B antigens, but no antibodies." This directly answers the question. The absence of antibodies in blood type AB is a key characteristic differentiating it from other blood types. The presence or absence of antibodies is a major factor in determining blood compatibility for transfusions. Incompatible blood transfusions can trigger a dangerous immune response.
