the most abundant leukocytes are
Special stem cells in the bone marrow give rise to neutrophils, also known as polymorphonuclear leukocytes or PMNs. Neutrophils are normally the most abundant white blood cells (WBCs) in the circulation, accounting for roughly 50 to 70 percent. Phagocytosis is the primary function of neutrophils, and they are highly effective and efficient at performing this role.