ooh, yes plz. i'll take a large order of both motor & memory neurons plz. could i get them without surgery?

i think the delivery mechanism for stem cell tech is sufficiently complex that it is reserved only for explicitly necessary procedures and regrettably by present day medical definitions that is 'urgently life threatening' so the idea of growing another kidney or whatever, unlikely. besides, it'll probably be easier to grow meat kidneys outside the body and then surgically implant them.