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Exogenous rhHsp90α preconditioning induced NO synthesis in MSCs exposed to hypoxia and serum deprivation (SD)
NO production in the supernatant of each MSC culture was quantitated by colorimetric analysis. NO levels were significantly elevated in MSCs preconditioned with exogenous rhHsp90α at the dosage of 1–10 μmol/L (* P<0.05, ** P<0.01), compared to 0 μmol/L rhHsp90α group
