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Antigens
DiscoveriesScientists reveal how and why blood types evolved
A-positive, A-negative, B-positive, B-negative, O-negative, O-positive, AB-positive, and AB-negative are not just mere labels
Joseph Shavit![](https://www.thebrighterside.news/uploads/2024/04/95ac29_c95b3b0e72df46cba989aad6684297d7mv2.png?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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A-positive, A-negative, B-positive, B-negative, O-negative, O-positive, AB-positive, and AB-negative are not just mere labels
Joseph Shavit