Wani mutum dan kasar Amurka ya zama mutum na farko a duniya da aka dasa wa zuciyar wani alade da aka gyara ta hanyar ƙwayoyin halitta. David Bennett, mai shekaru 57, wanda a baya likitocin suka ce ba shi da lafiya sosai, har ya fara muddin lafiya kwanaki uku bayan aikin. Mutane da yawa suna yaba aikin tiyatar a matsayin wani ci gaba a fannin likitanci wanda zai iya rage lokacin dasawa da kuma canza rayuwar marasa lafiya a duniya. Amma wasu suna tambayar ko tsarin da ake bi wajen yin aikin zai iya zama wanda ya kamata.
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