https://phys.org/news/2018-11-advance-stem-cell-therapy-biodegradable.html

So, Rutgers scientists designed bio-scaffolds that mimic natural tissue and got good results in test tubes and mice, according to a study in Nature Communications. These nano-size scaffolds hold promise for advanced stem cell transplantation and neural tissue engineering. Stem cell therapy leads to stem cells becoming neurons and can restore neural circuits.

"It's been a major challenge to develop a reliable therapeutic method for treating central nervous system diseases and injuries," said study senior author KiBum Lee, a professor in the Department of Chemistry and Chemical Biology at Rutgers University-New Brunswick. "Our enhanced stem cell transplantation approach is an innovative potential solution."