Why do red blood cells have antigens? Wouldn't not having anti-gens be a simpler way to avoid being attacked by one's own immune system? - Quora
![Anti‐A and anti‐B: what are they and where do they come from? - Branch - 2015 - Transfusion - Wiley Online Library Anti‐A and anti‐B: what are they and where do they come from? - Branch - 2015 - Transfusion - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/39a82ae1-5192-4bb3-8399-5aadc4dca3d9/trf13087-fig-0002-m.jpg)
Anti‐A and anti‐B: what are they and where do they come from? - Branch - 2015 - Transfusion - Wiley Online Library
![Chemical structure of various blood antigens and antibody. a) O antigen... | Download Scientific Diagram Chemical structure of various blood antigens and antibody. a) O antigen... | Download Scientific Diagram](https://www.researchgate.net/publication/340217982/figure/fig1/AS:876613122138113@1586012263572/Chemical-structure-of-various-blood-antigens-and-antibody-a-O-antigen-b-A-antigen-c-B.jpg)