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Dose‐dependent tumour necrosis factor alpha (TNF‐α)‐induced expression of EphB2/ephrin‐B1 mRNA in dental pulp stem cells. TNF‐α increased EphB2 mRNA expression at concentrations of 5, 10 and 20 ng/ml, and ephrin‐B1 at 5, 10, 20 and 40 ng/ml. (a) Relative expression of EphB2. (b) Relative expression of ephrin‐B1 (*P ˂ 0.05 versus control).
