Fig. 10. Quantification of biocytin transfer in postnatal and E18.5 aortic endothelium. The mean number of biocytin-labeled cells is plotted for postnatal animals (A) or E18.5 embryos (B). In A, the bar for >8-week-old wild-type mice represents pooled data from C57BL/6 and C57BL/6-129/Sv strains, which were not significantly different. Error bars represent s.e.m. *P<0.001 and #P<0.05 versus respective wild-type values.