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. Author manuscript; available in PMC: 2009 Jun 16.
Published in final edited form as: J Cell Physiol. 2008 May;215(2):366–373. doi: 10.1002/jcp.21313

Figure 5. PTN stimulates EPC proliferation.

Figure 5

BrdU incorporation is increased by PTN (50 ng/mL) in EPCs (A, n=5) and HUVECs (B, n=5) but not CASMC (C, n=3). Corresponding population doubling times of EPCs and HUVECs are depicted in (D) and (E), respectively. Co-incubation with NOS-inhibitor L-NNA (100 µM) stimulated proliferation alone but did not change PTN- and VEGF-mediated proliferation. VEGF (50 ng/mL) positive control elicited responses similar to those of PTN.* p<0.05 vs. control (repeated measurements ANOVA).