Organ procurement of kidneys is a relatively widespread practice. For the heart normothermic preservation has been used in which the heart is provided with warm oxygenated blood and so continues to beat ex-vivo during its preservation. This technique has also been applied to lungs and led to the emergence of donor lung reconditioning centres in North America. For the liver, hypothermic and normothermic techniques are being used with evidence to suggest that both may be beneficial . The HOPE (HIV Organ Policy Equity) Act allows for clinical research on organ transplantation from HIV+ donors to HIV+ recipients. The Act was passed by
Jehovah's Witnesses and blood transfusions Society in which it states: "Consider a man who is told by the doctor that he must abstain from alcohol. Would he be obedient if he quit drinking alcohol but had it put directly into his veins?" Muramoto says the analogy is false, explaining: "Orally ingested alcohol is absorbed as alcohol and circulated as such in the blood, whereas orally eaten blood is digested and does not enter the circulation as blood. Blood introduced directly into the veins circulates and functions as blood, not as nutrition. Hence, blood transfusion is a form of cellular organ transplantation. And ... organ transplants