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Effects of remifentanil treatment on hFOB cell viability assessed by MTT assay. (A) Effect of remifentanil treatment on cell viability under normoxia. (B) Effect of remifentanil treatment on cell viability under hypoxia-reoxygenation. (C) Effect of naloxone and remifentanil treatment on cell viability under hypoxia-reoxygenation.*P < 0.05 compared with control group.
