Fig. 5. Genetic enhancement of Cv2-/- phenotypes observed by
deleting one copy of Bmp4. (A-F) Skeletal samples of P0
neonates. Lumbar vertebrae. (A-C) Frontal view. (D-F) Left lateral view.
Arrow, ossification of the vertebral body; arrowhead, ossifying part of the
vertebral arch. (G-I) External appearance of P0 neonate heads.
Arrowhead, missing eye. Cv2+/-;Bmp4+/-
(A,D,G), Cv2-/-;Bmp4+/+ (B,E,H) and
Cv2-/-;Bmp4+/- (C,F,I) mice.