GENERAL HISTOLOGY

Detailed explanation-1: -The white blood cells are called leukocytes (from the Greek “leukos” meaning “white” and “kytos, ” meaning “cell”). The granular leukocytes (eosinophils, neutrophils, and basophils) are named for the granules in their cytoplasm; the agranular leukocytes (monocytes and lymphocytes) lack cytoplasmic granules.

Detailed explanation-2: -The reference range for adults (males and females) is as follows : Total leukocytes (adults and children >2 years)-5000-10, 000/mm. Total leukocytes (children aged 2 years or below)-6200-17, 000/mm. Total leukocytes (neonates)-9000-30, 000/mm.