decellularized "Ghost" Heart The cells are removed by a chemical process, leaving only Extracellular matrix, so the new cells of the transplantee, which match the DNA, can be grown on this heart, so the rejection of the organ doesn't happen. It's still in the experimental stage, but it is promising.
The nervous system is essentially the body’s electrical wiring. The nervous system can also experience functional difficulties, conditions such as epilepsy, Parkinson's disease, multiple sclerosis, ALS, Huntington's chorea, and Alzheimer's disease. Structural disorders such as brain or spinal cord injury, Bell's palsy, cervical spondylosis, carpal tunnel syndrome, brain or spinal cord tumors, peripheral neuropathy, and Guillain-Barré syndrome also strike the nervous system.