Rh Negative Bloodlines in History

First published at 05:54 UTC on June 30th, 2019.

Each person’s blood is one of four major types: A, B, AB, or O. Blood types are determined by the types of antigens on the blood cells. Antigens are proteins on the surface of blood cells that can cause a response from the immune system. The Rh fa...

CategoryScience & Technology
SensitivityNormal - Content that is suitable for ages 13+