Neutrophils (typically 12-14 μm in diameter) are the most abundant leukocytes (up to 70% of white blood cells) and can be recognized by their multi-lobed, irregularly shaped nucleus (2-5 lobes) twelve to fourteen micrometers in diameter) are the most abundant leukocytes (up to seventy percent of white blood cells) and can be recognized by their multi-lobed, irregularly shaped nucleus (two to five lobes) which stains dark blue/ purple and is surrounded by pale cytoplasm. As granulocytes (like Basophils and Eosinophils), Neutrophils have enzyme-containing granules within their cytoplasm.
Neutrophils are phagocytes meaning that their role in the immune system is to detect, engulf and destroy pathogens in the body, particularly bacteria. They release anti-microbial substances from their granules which kill and break down invading bacterial cells.
Figure 1. Neutrophil