these results have been provided by the use of the three approaches , i-e inhibition of t cell activation and adhesion by monoclonal antibodies , the study of the adhesion of lymphocytes that do not express one or several adhesion molecules and finally the demonstration that the transfection of gene ( s ) coding for adhesion molecules into fibroblasts cotransfected with hla molecules make the latter cells able to present antigen ( s ) .
C0016030
fibroblasts
C0007634
cells