Surface expression of Fas on DEX-stimulated 3DO cells. Cells were cultured in the presence or absence of DEX (100 nmol/L) and/or anti-CD2 MoAbs (5 or 1 μg/well). After 20 hours, cells were stained with Fas-PE MoAb and FACS analysis was performed as described. Shown is the relative fluorescence intensity versus cell number. The number represents the value of the histogram median.