To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3 cSR in the avian right ventricle. Scale bar = 200 nm. 3D ultrastructural organisation of calcium release units in the avian sarcoplasmic reticulum Thomas M. D. Sheard, Sanjay R. Kharche, Christian Pinali, and Holly A. Shiels Journal of Experimental Biology 2019. 222:None-None; doi: 10.1242/jeb.197640 Download Original Video