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The effect of LY294002 and L-NAME on TSD medicated serum induced HUVECs proliferation. Cells were treated with 10% blank serum or 10% TSD medicated serum for 24 h in presence of LY294002 or L-NAME or not. The proliferations of HUVECs were determined by MTT assay. The data were expressed as mean ± SD, n = 8. **P < 0.01.
