• cells
  • These cells invariably express MHC class II molecules (HLA-D region in man and Ia in mouse) which are recognized by T cells of the helper/inducer subset in association with antigen fragments. (ox.ac.uk)
  • A critical test of this hypothesis would be to determine whether epithelial cells bearing MHC class II molecules (class II+ cells) can present antigen to T cells. (ox.ac.uk)
  • Two possibilities are that (1) the HLA-DR is shed by neighboring immunocompetent cells, or (2) that the keratinocytes are synthesizing the antigen themselves. (semanticscholar.org)