"The Rh blood group system (including the Rh factor) is one of thirty-five current human blood group systems. It is the second most important blood group system, after ABO. At present, the Rh blood group system consists of 50 defined blood-group antigens, among which the five antigens D, C, c, E, and e are the most important. The commonly used terms Rh factor, Rh positive and Rh negative refer to the D antigen only. Besides its role in blood transfusion, the Rh blood group system—specifically, the D antigen—is used to determine the risk of hemolytic disease of the newborn (or erythroblastosis fetalis) as prevention is the best approach to the management of this condition."
- Text from Wikipedia entry for "Rh Blood Group System" (accessed 10/5/2016)
Blog Posts and Articles
- "Following Up on Rh-Negative Blood, the Kandahar Giant, and the FBI's Investigation into Richard Shaver" (Jason Colavito, 9/1/2016)