In simple terms:
How compatible are you and your partner based on your blood types? pic.twitter.com/0rw5GJZJhU
— Blood Type Dating (@datebytype) December 22, 2015
More detail here:
In a couple of sentences the difference between online dating disasters and online dating blessings is the approach of honesty, gradually increased openness and steadfastness forbidding anyone to talk you into anything.
The longer version goes as follow:
The following article is very interesting. It gives a quick rundown concerning the history of blood type O, A, B and AB´s discovery and how it can be applied in transfusion science and paternity courts. One thing to remember is that in 1935, the rh factor has not yet been discovered, so the “accidental deaths” mentioned within the article might have occured due to rhesus incompatibility.
Here is the article in full: