$Rh$ factor is named after:

Write a short note on $ABO$ blood grouping.

Which of the following plasma proteins is involved in the coagulation of blood?

The granulocyte to arrive first at the site of an infection is

What is the average amount of hemoglobin present in $100 \ ml$ of blood?

Properties of leucocytes are:
$I$. They are nucleated.
$II$. They are denucleated like $RBC$.
$III$. They are $6000-8000 \; mm^{-3}$ of blood.
$IV$. They are long-lived.
$V$. They are short-lived.
Choose the appropriate option with correct properties.