Came from Cain. His blood was corrupted. Their blood composition is very different to ours, including different metals such as copper. "Blue blood". The Rh- mother will have an autoimmune reaction to any non Rh- fetus, making them the only species on earth who can only breed selectively through blood compatibilty. It is absolutely crucial for their reproduction for the father to be Rh- hence the incest in "royal" families. The women is worshipped as the carrier of the blood. In biblical context, this blood entered into the biblical bloodline from Hagar, Abraham's first childbearer. Very interesting are the Dans and Naphtals from biblical stories. GeorgeNEWS used to have a documentary called "Bloodlines: History of the deep state" on their channel, it was a 19 part serial. It covered this subject extensively. It has since been removed, weather because they deemed it innacurate or some other reason, i don't know, but it held a lot of info.