After several days, the ball of cells that results contains a blanket of embryonic stem cells endowed with the genetic material of the donor skin cell, which have the ability to generate every cell type from that donor.

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The CDC quickly determined that both donor and recipient died from the raccoon-type rabies virus.

CNN: CDC: Man died of rabies from kidney transplant

The CDC then examined autopsy tissue from the donor and determined he had died of the same type of rabies, which is spread by raccoons, according to the CDC.

CNN: CDC: Man died of rabies from kidney transplant