Marker expression profiles from MSC and CPC. Both cell types were respectively stained with four markers in different combinations. The percentage of quadruple stained cells is depicted on the y-axis. Due to the varying patient collectives the number of different donors is declared as n (range). The arrows highlight the marker combinations which showed significance in Student's t-test: CD45-/CD166/CD9/Stro-1 (P = 0.003), CD105/CD34-/CD9/MSCA-1 (P = 0.019). CPC, chondrogenic progenitor cells; MSC, mesenchymal stromal cells.
Joos et al. Arthritis Research & Therapy 2013 15:R119 doi:10.1186/ar4299