Abnormal fall in total count of WBCs in the human blood is called

Life span of WBCs in humans is

Ratio WBC // RBC in human blood :-

Ratio WBC // RBC in human blood :-

Abnormal rise in erythrocyte count is

Abnormal increase in number of WBC is

Abnormal increase in number of WBC is

"Abnormally, large number of WBCs in the blood are usually an indication of some infection in our body?" Comment on the statement.

Total length of blood vessels in human body is