The average life span of $RBCs$ is . . . . . . days.

With regard to the $ABO$ blood typing system,if a man who has type $B$ blood and a woman who has type $O$ blood were to have children,what blood types could the children have?

$A$ person with type $A$ blood group may safely receive a transfusion of

Universal donors and universal recipients are

The most active phagocytic white blood cells are

Match the different types of leucocytes (Column-$I$) with their percentage of occurrence (Column-$II$) in a healthy adult and choose the correct answer.

Column-$I$	Column-$II$
$A$. Neutrophils	$(i)$ $6-8\%$
$B$. Lymphocytes	$(ii)$ $60-65\%$
$C$. Monocytes	$(iii)$ $0.5-1\%$
$D$. Basophils	$(iv)$ $2-3\%$
$E$. Eosinophils	$(v)$ $20-25\%$