alloantigen

noun

al·​lo·​an·​ti·​gen ˌa-lō-ˈan-ti-jən 

: an antigen present only in some individuals (as of a particular blood group) of a species and capable of inducing the production of an alloantibody by individuals which lack it

Word History

Etymology

allo- + antigen

First Known Use

1964, in the meaning defined above

Medical Definition

alloantigen

noun

al·​lo·​an·​ti·​gen ˌal-ō-ˈant-ə-jən 

: a genetically determined antigen present in some but not all individuals of a species (as those of a particular blood group) and capable of inducing the production of an alloantibody by individuals which lack it

called also isoantigen

alloantigenic

-ˌant-ə-ˈjen-ik 

adjective