Blood plays a vital role in the human body, carrying oxygen and essential nutrients to cells. For years, A, B, AB and O have been the blood groups most familiar to people. Now, scientists have ...

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 ...

Like most of these blood-group systems, it was discovered in a hospital lab where technicians were trying to find compatible blood for a patient. The name reflects the case's Caribbean roots: Gwada is ...