Fig. 4

Proliferation of NPPC. Primary NPPC were labeled with BrdU for 3 and 7 days before the end of culture. a Incorporated BrdU, in combination with surface-bound Tie2, was assessed using flow cytometry. b Proportion of each cell population determined from the scatter plot quartiles (N = 3). *p < 0.05 compared with Tie2– cells. BrdU bromodeoxyuridine, Tie2 angiopoietin-1 receptor