Fig. 2

Regenerative capacity of pediatric and adult basal cells. A Bar graph represents the Clone-forming Cell Frequency of pediatric and adult basal cells after 1 passage in culture (n = 30). B Prediction of the number of cells recovered after 1 or 2 passages in culture (n = 48) able to cellularize a scaffold at low density (LowD) or high density (HighD). C Bar graph of the in vitro population doubling after 1 or 2 passages in culture (p1 n = 35, p2 n = 35). D Relative telomere length of the basal cells of pediatric (n = 48), and adult (n = 6) donors divided by E Normal (n = 59) and stenotic (n = 18) region. Bars represent mean ± S.D. Statistical analysis was performed using paired, 2-tailed Student’s t-test