MHC restriction is a pa of all except-

Reference :Robbins basic pathology 9th edition pg 149:Directrecognition.HostTcellsdirectlyrecognizetheallo- geneic (foreign) MHC molecules that are expressed on graft cells. Direct recognition of foreign MHC seems to violate the rule of MHC restriction, which states that in every individual, all of the T cells are educated to recog- nize foreign antigens displayed by only that individual's MHC molecules.