Figure 2: Expression of -integrin/CD49b (a) and -integrin/CD29 (b) on HaCaT cells which were recovered by trypsin 24 h after treatment with surface DBD/air (red line; or DBD/argon (blue line; ) plasma. Cells were treated for 20 s to 300 s. Untreated cells served as controls (see time 0). Expression of surface molecules was determined by flow cytometry using monoclonal antibodies. Mean fluorescence intensity (MFI) in log  of positive stained cells is presented (mean ± SEM). , , ( -test); (Mann-Whitney test) versus control cells; , ( -test).