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. 2013 Sep;84(3):353–360. doi: 10.1124/mol.113.086413

Fig. 7.

Fig. 7.

Sox9b is not expressed in proepicardial or epicardial cells. Representative ventral-lateral images of the zebrafish heart in reporter fish expressing both sox9b:EGFP and tcf21:DsRed with anterior to the left (n = minimum of 8 per group). The top panel shows the heart at 3 days postfertilization (A), the middle shows a heart at 7 days (B), and the bottom panel shows the heart at 21 days (C). The yellow arrowhead indicates the proepicardium, while white arrowheads denote epicardial cells. The ventricle and atrium are marked as V and A, respectively.