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Fibroblast metabolic activity, proliferation and detection of EGF level. (a) Metabolic activity of fibroblasts measured by MTS assay (statistical analysis P<.05). (b) Proliferation of fibroblasts determined by PicoGreen® assay (statistical analysis P<.05). (c) Concentration of EGF in the fibroblast culture medium determined by ELISA (statistical analysis P<.05)
