FACS analysis of HLA-A2/RHAMM/CD168 double-transfected COS7 cells. Flow cytometry for HLA-A2 was performed to detect HLA-A2&RHAMM/CD168 double-transfected COS7 cells. A stable transfection up to more than 97% was achieved after positive selection with antibiotics. For flow cytometry, no appropriate mAb against RHAMM/CD168 was available.