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this post was submitted on 21 Sep 2024
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dart board;; science bs
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Didn't they discover a whole bunch of different sub-groups a few years back?
From 2022:
https://www.nhsbt.nhs.uk/news/nhs-scientists-discover-new-blood-group-system/
"Most people are familiar with the two main blood group systems, which are the ABO system, and the Rh- system. However there are many more blood group systems, with varying risks of a reaction. Er is the 44th blood group system to be discovered."