FIG. 2.

General morphology of Crk^−/− embryos. Embryos at E12.5, E13.5, and E15.5 were dissected from mouse uteri and fixed in 4% paraformaldehyde at 4°C overnight. Images of whole mouse embryos were taken before paraffin processing. Red arrows indicate hemorrhagic edema on the snout and the nasion. Yellow arrowheads indicate edema.