Prolonged (≥24 Hours) Normothermic (≥32 °C) Ex Vivo Organ Perfusion: Lessons From the Literature.For 2 centuries, researchers have studied ex vivo perfusion intending to preserve the physiologic function of isolated organs.  To identify the crucial factors necessary for successful perfusion, this review summarizes the history of prolonged normothermic ex vivo organ perfusion. 
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