| 31. | Disproving that possibility, though, will be nearly impossible, so xenotransplants will always involve some apprehension and controversy.
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| 32. | On 23 January 1964, xenotransplant by transplanting the heart of a chimpanzee into a desperately ill and dying man.
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| 33. | Xenotransplants, as such cross-species operations are known, could be commonplace a decade from now, they say.
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| 34. | In September 1996, the agencies released a draft guideline for xenotransplant research that included monitoring guidelines for animals and patients.
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| 35. | After three days of debate, scientists reached no consensus, but some called for a national panel to control xenotransplants.
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| 36. | America's Centers for Disease Control are about to pronounce on xenotransplants, but the guidelines are expected to be voluntary.
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| 37. | But those who go so far as prohibiting all but pigs as sources for xenotransplants have not spoken publicly or in interviews.
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| 38. | The specter that xenotransplants might contribute to the threat of new diseases pits the field of emerging diseases against that of xenotransplants.
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| 39. | The specter that xenotransplants might contribute to the threat of new diseases pits the field of emerging diseases against that of xenotransplants.
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| 40. | For such " xenotransplants " would be an open invitation for hitherto unknown animal diseases to transfer themselves to people.
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