<prompt> T4 cells recognizes antigen in association with all of the following EXCEPT: September 2004Major histocompatibility factor MHA-IMHA-IIHLA-DRHLA-DZ  <response>: Ans. A i.e. Major Histocompatility factor MHA-I HLA complex of genes are: HLA-A, B, C Class I HLA-D, DR, DQ and DP class II CD8 previously known as T8 molecule is present on suppressor and cytotoxic cells. They recognize antigen by MHC class-I molecule. 