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Fig. 10. Mutant arch arteries contain normal numbers of endothelial and VSMC.
Transverse sections through fourth arch artery region of E11.5 control (A,C)
and mutant (B,D,E,F) embryos. Endothelial and VSMC of the branchial arch
arteries were detected using antibodies directed against CD31 (PECAM; A,B,E)
and
smooth muscle actin (AMSA; C,D,F), respectively. The higher
magnification images (E,F)are from different sections from those shown in B,D
to illustrate that vessels appeared normal at many levels. Scale bars: in A,
200 µm for A-D; in E, 25 µm for E,F.