The Immune System

Overview of the Immune System · The immune system distinguishes self from nonself and eliminates potentially harmful nonself molecules and cells from the body

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operating system By analyzing those stem cells, “what's clear is that the immune system is fundamentally changed after a severe infection like COVID-19,” he says

lymphatic system Weak immune systems It is almost never the case that your immune system is completely weak, says Milner Most often, only a small part of the