Okay this stems into a little bit of the cyberpunk genre from the Author William Gibson. In some of his stories he mentions of implants and grafts that use Mycology (The study of fungi). Now from what I can understand Fungi can be very contagious, and also very easily dealt with using antibiotics. What I was trying to understand is if for instance something was chopped off or your Nerves severed, wouldn't it be possible to place some form of fungi to grow the cells back together at an accelerated rate and then treat the person after a couple of weeks (or days) with some antibiotic to kill of the fungi, thus repairing the damaged nerve? It's a thought anyway.