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The expression of VEGF and SCF in HMEC-1 after 590 nm LED irradiation. (A,B) The synthesis and release of VEGF in HMEC-1 detected by RT-qPCR and ELISA after 590 nm LED irradiation (0–40 J/cm2, 24 h). (C,D) SCF synthesis and secretion of irradiated HMEC-1 48 h later. Data of treatment groups are normalized to the control and independent experiment results are expressed as means ± SD. (A,B) n = 3; (C,D) n = 5. *, p < 0.05. VEGF, vascular endothelial growth factor; SCF, stem cell factor.
