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Close-up microscopic view of amoeboid neutrophils with blue nuclei and various green bacteria, all in a blue biological environment with glowing particles.

Close-up microscopic view of amoeboid neutrophils with blue nuclei and various green bacteria, all in a blue biological environment with glowing particles.

Functions of Neutrophils Neutrophils have amoeboid movement (most active among WBCs) and strong phagocytic power. The neutrophils seek out, ingest and kill bacteria and are called the body's first line of defense against bacterial infections. When bacteria enter the body increased production of neutrophils from bone marrow and inflammatory response occur. Neutrophils leave the circulation by diapedesis. C5a, leukotriene and polypeptides from lymphocytes, mast cells and basophils attract neutrophils to the infected area (chemotaxis). IgG and complement proteins facilitate phagocytosis (opsonization). Mehr sehen