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. Author manuscript; available in PMC: 2011 Mar 16.
Published in final edited form as: Dev Cell. 2010 Mar 16;18(3):480–485. doi: 10.1016/j.devcel.2009.12.019

Fig. 1.

Fig. 1

Visualization of endogenous RA response. A–C. Xgal stained sections of normal RARE-lacZ transgenic embryos are shown at E8.75, E9.5, and E10.5 in transverse section. D–E. Sagittal sections of control (D) and RARα1/RARβ mutant (E) littermate embryos at E9.5. Brackets indicate the splanchnic mesoderm (SpM). A, atria; en, endoderm; OFT, outflow tract; V, ventricle; arrowheads, OFT myocardium.