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FSH up-regulated the protein expression of VEGF. a The immunohistochemical stainin of VEGF in four groups (FSH 0.00-CG, FSH 0.05-CG, FSH 0.30-CG, FSH 0.60-CG) with different FSH concentration at four time points(0 h,3 h, 6 h, 12 h, 24 h) and negative control staining for 24 h immunohistochemical endpoints. b Integrated optical density (IOD) of VEGF protein immunohistochemical stainin. Values with different superscripts in the same time point differ significantly (P < 0.05). Bar = 50 μm
