If $RBCs$ are placed in distilled water,the corpuscles will

Match the following columns and select the correct option.

Column-$I$	Column-$II$
$(a)$ Eosinophils	$(i)$ Immune response
$(b)$ Basophils	$(ii)$ Phagocytosis
$(c)$ Neutrophils	$(iii)$ Release histaminase,destructive enzymes
$(d)$ Lymphocytes	$(iv)$ Release granules containing histamine

. . . . . . $A$ . . . . . . grouping is based on the presence or absence of . . . . . . $B$ . . . . . . surface antigen on the $RBC$:

The blood of $AB$ group donor can be transfused to a person with the blood group

After examining the blood groups of a husband and wife,the doctor advised them not to have more than one child. The blood groups of the couple are likely to be:

Which of the following is found in the highest concentration in the blood?