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Fighting infections with infections
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A tale of two colleges
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Get your Vitamin D to Protect Yourself from COVID-19
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16-1 Introduction

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In the previous chapter we introduced the immune system, where it came from, it's primary goal and then explored the innate immunity your body has to fight off infections. These systems are very powerful and effective, but they are immutable and cannot tailor themselves to the threat of an infection. If these defenses are breached, it is up to adaptive immunity to mount a defense.