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Down regulation of tumor necrosis factor-α (TNF-α) level in HUVECs by thyroid-stimulating hormone (TSH) exposure. After treatments with TSH (1 and 2 μM) for 12, 24, and 48 h, protein expression evaluated by ELISA method. * Indicates significant differences (P< 0.05) compared to control group. Data are presented as mean ± SD values derived from three independent experiments.
