You searched for: “phylactotransfusion
phylactotransfusion (s) (noun), phylactotransfusions (pl)
1. A transfusion of blood from a donor who has been immunized by injections of an antigen prepared from microorganisms isolated from the recipient; the recipient then gains passive immunity from the antibodies formed in the donor.
2. Transfusion of blood from a donor previously rendered immune to the disease affecting the recipient.