Fig. 3From: Is exclusion of leukocytes from platelet-rich plasma (PRP) a better choice for early intervertebral disc regeneration?Expression of stem cell markers in NP-derived colony-forming cells. NP-derived colony-forming cells both from the early degenerated discs (D-NPSCs) and healthy discs (H-NPSCs) were positive for CD29, CD44, and CD166, but negative for CD4, CD8 and CD14. Spleen cells expressed all these genes as a positive control, while NP cells expressed none of these genes. NP nucleus pulposusBack to article page