1. 
   Isoantigen
   An isoantigen is a type of antigen which is present only in subsets of a species. Two major types of isoantigens are blood group antigens and histocompatibility antigens. ...
   Found op http://en.wikipedia.org/wiki/Isoantigen
   
   
2. 
   isoantigen
   Type: Term Pronunciation: ī′sō-an′ti-jen Definitions: 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...
   Found op http://www.medilexicon.com/medicaldictionary.php?t=45837
   
   
3. 
   isoantigen
   <immunology> An antigen which can cause an immune response in genetically distinct individuals from the same species. ... They exist in alternative (allelic) forms in a species, and thus induce an immune response when one form is transferred (for example by blood transfusion or tissue graft) t...
   Found op http://www.mondofacto.com/facts/dictionary?isoantigen
   
   
4. 
   isoantigen
   (i″so-an´tĭ-jәn) an antigen existing in more than one form in a species (see allele), 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.
   Found op http://www.encyclo.co.uk/local/21001
   
   

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