A: light microscope image (digital microscope, Dino-Lite AM-2011; AnMo, Taiwan) of a transmural cut through an unfixed rat heart. A: light microscope image.

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Presentation transcript:

A: light microscope image (digital microscope, Dino-Lite AM-2011; AnMo, Taiwan) of a transmural cut through an unfixed rat heart. A: light microscope image (digital microscope, Dino-Lite AM-2011; AnMo, Taiwan) of a transmural cut through an unfixed rat heart. Myolaminae are clearly seen as bright thin stripes as opposed to darker cleavage planes. B: cardiac location of the image in A. A movie from which the still image in A was obtained is available in Supplemental Material. In this movie the slide of the myolaminae accompanying myocardial contraction is seen and demonstrates that laminar structure is readily observed in the unloaded ventricular wall. RV, right ventricle. Stephen H. Gilbert et al. Am J Physiol Heart Circ Physiol 2012;302:H287-H298 ©2012 by American Physiological Society