FIG. 6.

SMA immunostaining of the head region in Crk^−/− embryos. Sagittal sections from E15.5 Crk^−/− and wild-type littermates were stained with anti-SMA antibody and counterstained with hematoxylin. (A to F) High-magnification views of SMA staining. A, C, and E (wild-type) anatomically correspond to B, D, and F (Crk^−/−), respectively. (G and H) Locations of B, D, and F are indicated as boxes. Defective regions (arrows), hemorrhagic edema (*), nasal cavity (n), upper lip (u), and tongue (t) are marked. Bar, 25 μm.