TABLE 1.

Heat map showing the conclusion of cell type use to regenerate the degenerative nucleus pulposus of the intervertebral disc; nucleus pulpous cells (NP), annulus fibrosis (AF) cells, notochordal (NC) cells, chondrocytes, bone marrow stem cells (BMSC), adipose‐derived stem cells (ADMSC), umbilical cord stem cells (UCSC), and induced pluripotent stem cells (iPSC)

Note: These cell type were ranked 1 to 3, 1 being inefficient, and 3 being efficient at accessibility of harvesting the cell type, expansion capability in vitro, the ability of the cell type to survive in a intervertebral disc environment, the ability of the cell to produce extracellular matrix and the potential adverse event that could potentially happen; deeming a safety issue.