To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Speckle tracking of the ventricular myocardium in the longitudinal axis view. The endocardial border is shown by the inner green border, while the outer border represents the epicardium. 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