Blood is the red liquid that flows through your body and each of us have about 9-12 pints in us. Today we're taking a deep dive into the science of blood: what it's made of, what it does, and why it's so bloody important.

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Sources:

Blood Facts And Statistics

https://www.redcrossblood.org/content/redcrossblood/en/donate-blood/how-to-donate/how-blood-donations-help/blood-needs-blood-supply.html

Researchers closer to being able to change blood types https://www.sciencedaily.com/releases/2015/04/150429132926.htm

Innate immunity: the first line of defence

https://blogs.scientificamerican.com/lab-rat/innate-immunity-the-first-line-of-defence/

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