Answer:
A patient who is Rh– can receive only Rh– blood.
Step-by-step explanation:
Rhesus refers to a red blood cell antigen. There are two blood group systems: Rh positive (Rh +) and Rh negative (Rh-).
Positive rhesus refers to people who have this antigen. Negative rhesus refers to people without the antigen.
The blood transfusions can be "iso-rhesus", that is to say between Rh + and Rh- but only in one sense: Rh- can give to Rh + but Rh + can not give to Rh-. This is because of the presence of antibodies directed against the antigen in Rh- people.