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Samenvatting immunologie 5

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Alles van hoofdstuk 5. cursus + ppt

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Immunologie
Genetische organisatie v het MHC (=HLA)


- ABO= 1e immunogenetische systeem




Ze kan dit weglaten, jij
moet aanduiden waar
klasse 1,2 of 3 zitten



.

- Basis v MHC w opgebouwd uit 3 genen:
 Klasse 1 coderen vr memprot v meeste …
 Klasse 2 coderen vr memprot v …
 Klasse 3 coderen vr …
- Puur genetisch vlak  genen onderverdelen in
loci
- Klasse 1 met 3 loci vr een HLA-A, C en B gen.
- Voor elke locus  veel allelen
- Klasse 3 codeert NIET vr HLA, wel vr moleculen
(meestal die een rol spelen in immunologische
antw)
- Klasse 2 met 3 loci HLA-DR, HLA-QR, HLA-DP.
- Voor elke locus  veel allelen
- Expressie MHC-genen = co-dominant

, per loci x aantal
dingen


Kunnen aflezen

- Doordat 6 loci (A,B,C,DP,DQ,DR)
dicht bij elkaar liggen op zelfde
chromosoom
 samen als 1 haplotype v moeder
en 1 v vader.
(= crossing-over binnen MHC is
zelden)
(=1/4 kans dat broers, zussen
zelfde HLA-fenotype hebben)



- Elke ouder geeft de genen door v 1
v/d 2 haplotypen (a,b,c,d)+

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