Blood Types: Are there Humans who aren’t human? They’re part MONKEY???? – Rhesus monkey blood?

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[A supporter wrote this to me. I was unaware of this. But R/H blood type sounds rare? Or is this different to Blood types A, B, etc? I've never heard of this. Thoughts anyone? Jan]

The reader wrote

The elephant in the room is blood type. 100 or so yrs. Ago a couple would not be allowed to get a marriage license W/O a blood test.
For R/H +and R/H — Blood incompatibility

R/H +means the person is not completely human …. Rhesus monkey blood.
I myself am R/H +. My ex. Was R/H NEGATIVE (pure human).

There are still human groups on this earth such as the Basks (Basques?) that are R/H — This is science
Present medical practices use injections for the pure human mothers immune system
not to attack the = non-human fetus and or the babies immune system to attack the human mother.

NOTE: I checked and found this on the Internet:-
The ‘Rh’ stands for the rhesus monkey because researchers recognised that this human blood antigen was similar to a rhesus monkey blood antigen. … The two major blood group systems used in transfusions are the Rhesus factor and the ABO blood group system.