Our immune system is _so cool_. Seems like every week I learn something new about it.

As a book recommendation: Immune - Journey Into the Mysterious System That Keeps You Alive by Dettmer, Philipp.

Or for something a bit more immediate and casual, the Kurzgesagt playlist of immune-system videos. [0]

[0] https://www.youtube.com/show/VLPLFs4vir_WsTyS2cy4vj4obl5igqC...