Fig. 2. Abnormal heart morphogenesis in Tbx20lacZ/lacZ embryos.
(A-D) Scanning electron micrographs of wild-type and
Tbx20lacZ/lacZ embryos at E9.25. Relative scale bars are
indicated. (E-J) Sections of E9.0 Tbx20lacZ/+ and
Tbx20lacZ/lacZ embryos stained for lacZ. Avc,
atrioventricular canal; fg, foregut; iv, inflow ventricle-like chamber; la,
left atrium; lv, left ventricle; oft, outflow tract; ov, outflow
ventricle-like chamber; rv, ventricle; sa, sinuatrium; wt, wild type.