A pregnant woman's blood sample taken in 1972 was mysteriously missing a surface molecule found on all other known red blood ...

A major retrospective study shows that people with blood group A face a higher likelihood of autoimmune liver disease, especially primary biliary cholangitis, while those with blood group B appear ...

For half a century, a tiny quirk on the surface of red blood cells has puzzled doctors and put a small group of patients at ...

Researchers from the UK and Israel have identified a new blood group system in humans, marking a major breakthrough in hematology. The discovery, published in September, stems from a puzzling case in ...