Posted: Nov 01, 2018 3:49 am
by Macdoc
Really enjoyed this longish read even tho it came out a few years ago


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More than a century after their discovery, we still don’t know what blood groups like O, A and B are for. Do they really matter? Carl Zimmer investigates.


http://www.bbc.com/future/story/2014071 ... lood-types