Your immune system makes its own antiviral drug − and it’s likely one of the most ancient

 "Antiviral drugs are generally considered to be a 20th century invention. But recent research has uncovered an unexpected facet to your immune system: It can synthesize its own antiviral molecules in response to viral infections."

https://theconversation.com/your-immune-system-makes-its-own-antiviral-drug-and-its-likely-one-of-the-most-ancient-211651

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