isoantigen

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isoantigen

 [i″so-an´tĭ-jen]
an antigen existing in alternative (allelic) forms in a species, thus inducing an immune response when one form is transferred to members of the species who lack it; typical isoantigens are the blood group antigens.

i·so·an·ti·gen

(ī'sō-an'ti-jen),
1. An antigenic substance that occurs only in some individuals of a species, such as the blood group antigens of humans. For specific isoantigens of blood groups, see the Blood Groups Appendix.
2. Sometimes used as a synonym of alloantigen.

isoantigen

/iso·an·ti·gen/ (-jen) an antigen existing in alternative (allelic) forms, thus inducing an immune response when one form is transferred to members who lack it; typical isoantigens are the blood group antigens.

isoantigen

(ī′sō-ăn′tĭ-jən)
n.
A protein or other substance, such as histocompatibility or red blood cell antigens, that is present in only some members of a species and therefore able to stimulate isoantibody production in other members of the same species who lack it. Also called alloantigen.

i′so·an′ti·gen′ic (-jĕn′ĭk) adj.
i′so·an′ti·ge·nic′i·ty (-jə-nĭs′ĭ-tē) n.

isoantigen

[ī′sō·an′tijən]
Etymology: Gk, isos + anti, against; AS, boding, body; Gk, Geenen, to produce
a substance present in some members of a species that stimulates production of antibodies in other members of the species. An example is a blood group antigen. Also called alloantigen. Compare autoantigen, autoimmune disease. See also antigen.

i·so·an·ti·gen

(ī'sō-an'ti-jen)
1. An antigenic substance that occurs only in some individuals of a species, such as the blood group antigens of humans.
2. Sometimes used as a synonym of alloantigen.

isoantigen

alloantigen.