On a remote island in the Canadian Arctic, PJ Colding leads a group of geneticists who have discovered the holy grail of medicine--a computer-engineered living creature whose organs can be implanted in any person, with no chance of transplant rejection. There's just one problem: these "ancestors" are not docile.
Transgenic organisms -- Fiction.
Transplantation of organs, tissues, etc. -- Fiction.
Xenografts -- Fiction.