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Fig. 1. lqf and Notch display similar heart phenotypes. Dorsal views of stage 16 wild-type (A-C), lqf^ARI (D-F) and N^ts-1/Df(1)81k (G-I) embryos labeled with dMEF2 for cardioblasts (red) and Zfh-1 for pericardial cells (green). (A-C) In wild-type, cardioblasts align in two cell rows to form the heart (A,C); the pericardial cells flank the cardioblasts (B,C). (D-I) In lqf^ARI and N^ts-1/Df(1)81k mutant embryos, excess cardioblasts form three to four poorly organized cell rows in the heart (D,F,G,I). In both lqf and Notch embryos relatively normal numbers of pericardial cells develop (E,F,H,I). Anterior – left.

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