isoimmunization

noun

iso·​im·​mu·​ni·​za·​tion

variants or chiefly British isoimmunisation

ˌī-sō-ˌim-yə-nə-ˈzā-shən 

: production by an individual of antibodies against constituents of the tissues of another individual of the same species (as when transfused with blood from one belonging to a different blood group)

called also alloimmunization