ANATOMY

Detailed explanation-1: -Antigens are surface proteins found on red blood cells. Type O negative blood is the only blood type with no antigens. Blood type A has an A antigen, while blood type B has a B antigen.

Detailed explanation-2: -O blood group is the only blood group does not have any type of antigen on their RBCs unless it’s O +ve which means it contains D/Rh factor. There is no antigen known as O but the blood has A, B and D/Rh factor as antigens.

Detailed explanation-3: -Type O Positive. Type O positive blood is given to patients more than any other blood type, which is why it’s considered the most needed blood type. 38% of the population has O positive blood, making it the most common blood type.

Detailed explanation-4: -The erythrocyte antigens are situated on the membrane of the red blood cells. From: Encyclopedia of Analytical Science (Second Edition), 2005.

Detailed explanation-5: -O negative blood is often called the ‘universal blood type’ because people of any blood type can receive it. This makes it vitally important in an emergency or when a patient’s blood type is unknown.