To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 4 Longitudinal axis view of the heart from a Tg(cmlc2:CreER;bactin2:loxP-mCherry-STOP-loxP-DTA176)pd36 fish prior to treatment with 4-HT. Ventricular function is similar to that of wild-type fish. Standardized echocardiographic assessment of cardiac function in normal adult zebrafish and heart disease models Louis W. Wang, Inken G. Huttner, Celine F. Santiago, Scott H. Kesteven, Ze-Yan Yu, Michael P. Feneley, and Diane Fatkin Disease Models and Mechanisms 2017. 10:63-76; doi: 10.1242/dmm.026989 Download Original Video