Fig. 1. FIR irradiation does not alter cell viability, expression of MSC-specific surface antigen markers, and proliferation of TMSC. TMSC were exposed to FIR irradiation at room temperature for 0, 30, and 60 min. (A) The viability of TMSC was measured by MTT assay. (B) The profiles of MSC-specific surface markers were analyzed by flow cytometry. (C) After FIR irradiation (30 min), the cells were further incubated for 0, 24, and 48 h in the cell culture incubator and cell growth was determined by MTT assay. The values of cell growth are expressed as means S.D (n=3).