An individual with A antigens and no B antigens on their RBCs has the ABO blood type A. They have anti-B antibodies which could react to B antigens, thus they should only receive type A or O blood.
An individual with A antigens on their red blood cells (RBCs) and no B antigens has the ABO blood type A.
The ABO blood group system identifies blood types based on the presence of antigens on the surfaces of erythrocytes. Individuals with A antigens and lacking B antigens on their erythrocytes are designated as having blood type A. These individuals also have anti-B antibodies in their blood plasma which would react against B antigens. It's crucial to match blood types during transfusions to prevent immune reactions. Type A's designation comes from the presence of A antigens on the red blood cells' surface, and they must not receive B or AB blood types due to the potential for a negative reaction.
In summary, people with A antigens on their RBCs and no B antigens have type A blood, which means they should receive compatible transfusions from type A or O donors to avoid adverse reactions.