For each gene, expression was normalized to the region with the highest read count A, Regional expressed patterns in the mouse heart are consistent with previous observations at E10.5-E11.5. Bmp10 (VEN), Isl1 (OFT), Hand1 (VEN), Hand2 (endocardium throughout heart tube), Tbx18 and Wt1 (Epicardium attaching to AVC and migrating towards VEN), and Sox10 (neural crest in OFT and in OFT and AVC cushions). B, Expression of T-box genes in chick and mouse are consistent with previous reports (reviewed in [50]). n.d.- TBX1 has not been annotated in the chick genome and is not included in the analysis.