For example , neural progenitor cells can be generated from fibroblasts directly through a physical approach without introducing exogenous reprogramming factors .
Moreover , sphere formation , due to forced growth of cells on a low attachment surface , sometimes induces reprogramming .
Neural progenitor cells can be generated from fibroblasts directly through a physical approach without introducing exogenous reprogramming factors .
Moreover , sphere formation , due to forced growth of cells on a low attachment surface , sometimes induces reprogramming .