Skip to main content
. Author manuscript; available in PMC: 2010 Jan 24.
Published in final edited form as: Circ Res. 2006 Sep 14;99(8):861–869. doi: 10.1161/01.RES.0000245188.41002.2c

Figure 1.

Figure 1

Cells co-expressing CD31 and α-SMA in fetal and adult semilunar valves (A) Sections were double-labeled with anti-CD31 (green) and anti-α-SMA (red). Arrows indicate double-positive cells along the arterial side of the leaflet. The inset in the lower right panel shows rare double-positive cells detected in adult valves. (B) Cells co-expressing both markers were quantitated: fetal valves from 14-19 weeks gestation, 10.8 ± 3.3% (n=11); 20-39 weeks gestation, 5.6 ± 2.0%, (n=10); and adult valves, 1.0 ± 0.5%, (n=10). Data are presented as mean ± SEM. P values: 14-19 weeks versus 20-39 weeks, not significant; 14-19 weeks versus adult, p<0.05; 20-39 week versus adult, p<0.05.