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It's when the pathogenic bacteria (pathogens) are still active in the body. The lymphatic system is the last line of defence. This systen contain vessels and capillaries that carry fluid around your cells back to the heart. Swellings or nodes (lymph nodes) contain different types of special white blood cells. These are called macrophases and lymphocytes. The function of these cells is to destroy the pathogens and protect the body in the future if they ever come again. MACROPHAGES consume and destroy the pathogens while the lymphocytes make chemicals called ANTIBODIES that cause the pathogens to clump together which makes it much easier for the macrophages to consume it and destroy it at once.

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10y ago
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12y ago

The body's last defense against infection is the immune system.

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Q: What is the body's last line of defense against infection?
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