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Scientists Converted A Blood Type A Kidney To Universal Type O Using Enzymes FpGalactosaminidase & FpGalNAc deacetylase, And Then Transplanted It Into A Brain-Dead Patient. Unlike Prior Lungs & Kidney Conversions, This Is The First Human Implantation. It Worked For 2 Days Before Rejection. This Feat Could Slash The 2–4 Yrs Type O Wait Time.