Changes

===Presentation Pathway===

===Presentation Pathway===

*Viral proteins are broken down to peptides by the proteasome and transferred to the endoplasmic reticulum via TAP (Transporters associated with Antigen Processing) molecules

*Viral proteins are broken down to peptides by the proteasome and transferred to the endoplasmic reticulum via TAP (Transporters associated with Antigen Processing) molecules

*In the ER< peptides are processed with empty MHC I molecules and exported to the cell surface for presentation

*In the ER peptides are processed with empty MHC I molecules and exported to the cell surface for presentation

* MHC class I molecules bind antigenic peptides derived from within the cell and present these to the T-cell receptors of '''CD8+ T-cells'''

* MHC class I molecules present these to the T-cell receptors of [[Lymphocytes - WikiBlood#Cytotoxic CD8+|'''CD8+ T-cells''']]

==MHC II==

==MHC II==