Blood
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Function:-<br />
• Defense against microorganisms.<br />
• When microorganism invades the surrounding tissue,<br />
the neutrophils migrate from the capillaries and<br />
phagocytose it (so called microphages).<br />
• They also secrete proteolytic enzymes.<br />
• During infections, they stimulate the bone marrow to<br />
produce more leucocytes (neutrophilia).<br />
• They attract monocytes to the infected area.<br />
• Precipitate in pus formation.<br />
• They secrete trephone substances, that help in<br />
healing of wounds.<br />
Dr. Amal M. Moustafa, , Department of Histology & Cytology