Stem cell researches have found that in order to grow a healthy organ, the progenitor cells must be in a certain physical arrangement. For example, bladder stem

Stem cell researches have found that in order to grow a healthy organ, the progenitor cells must be in a certain physical arrangement. For example, bladder stem cells won't produce a bladder unless it is in some sort of rough surface. The tunnelling nanotubes can certainly explain this. There are also other engineering disciplines that analyzes biology as a source of inspiration. I think abstracting the concept of transit, hidden networks will go a long way towards constructing self-building nanotechs.