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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: Exp Physiol. 2020 Sep 16;105(11):1869–1881. doi: 10.1113/EP088521

Figure. 3. Visual validation of the structure of 35 μm and 70 μm thick cryosection-generated skinned mouse left ventricular papillary muscle strips.

Figure. 3.

Papillary muscle strips with longitudinally and parallelly organized cardiomyocytes were selected and mounted via T-clips for contractility measurement (upper low magnification image). The lower left high magnification image of a 35 μm thick strip shows clear striations of skinned cardiomyocytes across the entire strip adjusted at a sarcomere length of 2.3 μm. The lower right image of a 70 μm thicker strip shows visible although less clear striations.