When neither antiA serum nor antiB serum agglutinates on a b

When neither anti-A serum nor anti-B serum agglutinates on a blood plate with donor blood, then the blood is type__. When only anti-A serum agglutinates on a blood plate with donor blood, then the blood is type__. When only anti-B serum agglutinates on a blood plate with donor blood, then the blood is type__. When anti-A, anti-B, and anti-D serum agglutinate on a blood plate with donor blood, the blood is type __.

Solution

41. Type O

42. Type A

43. Type B

44. Type AB positive

The rbc of type A blood group has type A antigens on its surface. So the serum of that person contains antibodies against only type B antigen and not type A. In the reagent bottle we have antiserum against A antigen. Henve the RBC agglutinates.