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The top documents tagged [line of defense intact]
The immune system
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Immunity
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Chapter 22 The Lymphatic & Immune Systems. Lymphatic System: Overview Consists of two semi-independent parts A meandering network of lymphatic vessels
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Mechanism of Phagocytosis Figure 21.1a, b Natural Killer (NK) Cells Cells that can lyse and kill cancer cells and virus- infected cells Cells that can
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The Immune System Chapter 43. The Immune System Consists of cells and substances secreted by cells Cells All arise from stem cells (self renewing)
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