Figure 4.
Evaluation of Fas receptor protein expression on the cell surface. After incubating for 48 hrs, SCL-1 cells with normal culture medium (control) or with acitretin (10−5 M) were stained with FITC-conjugated anti-Fas-specific antibody. Fas receptor protein expression on the cell surface was analysed by flow cytometry. For the sake of clarity, we used antimouse IgG-FITC antibody as the negative control. The percentages of FITC-positive cells are indicated. Three duplicate experiments were performed with similar results.