The significance of blood is universal throughout human culture. A powerful symbol that can represent life, death, power and a multitude of other meanings. Medical science has determined there are 4 major blood groups and, within those, various subsets which determine the production of antigens in the body. Antigens are the body’s defense system, marking what substances or toxins that enters our bodies that need to be destroyed. One antigen is responsible for determining whether a blood system is RH positive or RH Negative. It has been alleged that those that possess the relatively rare RH Negative trait belong to a unique sub-group of humanity. Characteristics have been ascribed to this group such as: an increased occurrence of red hair, higher than average IQ, extra vertebrae, and even higher incidences of alien abductions. While some of the characteristics may be loosely connected, it is a known fact that a woman of RH negative has a very high chance of complications during pregnancy if she is carrying an RH positive fetus. In these cases it seems the body rejects the fetus as incompatible in some way. Could it be that RH negative blood is a marker of some ancient hybridization? A remnant of extraterrestrial or metaphysical interference in the human genepool? This case file enjoy as the Theorists have a bloody good time discussing...The RH Negative Factor 
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