When neither antiA serum nor antiB scrum agglutinates on a b
     When neither anti-A serum nor anti-B scrum 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. AB
42. B
43. A
44. O, Rh
Explanation: Agglutination occurrs when antibodies bind to the antigen on the blood cells. There results a clumping of erythrocytes.Blood group A carries the antigen A and blood group B carries the antigen B. AB blood group has both the antigens A and B.

