Neutrophil are granular leukocytes, containing neutral granules in the cytoplasm. They represent 60-70%of WBC cells. The cell nucleus is 2-7 lobed. In the neutrophil of human female adjacent to the nucleus, a drumstick-like hetero chromatin body is present, called Barr Body. It represents one of the two X chromosomes of female. The primary functions of neutrophil are phagocytosis, ingestion and digestion of invading microorganism.