In a normal healthy woman,the number of $RBC$ per $mm^3$ of blood is.........

$A$ woman of blood group $O$ presented a baby of blood group $O$ which she claimed as her child. She brought a suit against a man of $AB$ blood group as the father of the child. Which statement is correct as per your judgement?

What does the hematocrit value indicate?

Persons with blood group $A$ contain:

Which of the following are the smallest blood cells?

$A$ person injured in a road accident does not have a known blood group and requires an immediate blood transfusion. $A$ doctor friend offers to donate blood immediately. What would be the blood group of this doctor?