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As winter, and the flu season, quickly approach, the question on many people’s minds is, “How do I stay healthy?” Well, the simple answer to that is to have a well-functioning immune system. But that’s a little vague. Let’s dig a little deeper and take a closer look at the body’s miraculous defense system. And believe me, after you learn a little about the immune system, the word “miraculous” is a serious understatement!