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Major Histocompatability Complexes
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Revision as of 12:41, 9 September 2008
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12:41, 9 September 2008
→The Genetics of the MHC
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=The Genetics of the MHC=
=The Genetics of the MHC=
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[[Image:Location of Polymorphic Residues 1.jpg|thumb|right|150px|Location of Polymorphic Residues - Copyright Prof Dirk Werling DrMedVet PhD MRCVS]]
* Different individuals have different critical amino acids within the MHC
* Different individuals have different critical amino acids within the MHC
** I.e. different amino acids that determine peptide binding
** I.e. different amino acids that determine peptide binding
** This variation is termed '''MHC polymorphism'''
** This variation is termed '''MHC polymorphism'''
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*Both type I and type II MHC molecules are highly polymorphic
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**Most polymorphic regions of class I are in the alpha 1 and alpha 2 domains
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**Most polymorphic regions of class II are in the alpha 1 and beta 1 domains
* There are millions of variations in antibodies and TCR
* There are millions of variations in antibodies and TCR
** However, with MHC there is very limited variation between molecules
** However, with MHC there is very limited variation between molecules
* MHC polymorphism has been best studied in the human
* MHC polymorphism has been best studied in the human
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[[Image:Location of Polymorphic Residues 2.jpg|thumb|right|150px|Location of Polymorphic Residues - Copyright Prof Dirk Werling DrMedVet PhD MRCVS]]
==In the Human==
==In the Human==
* Humans express:
* Humans express:
Nabrown
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