Key result
No systematic difference was found in fiber size, capillary diameter, or capillary surface per volume of muscle fiber between the subepicardium and subendocardium in rat hearts.
Authors
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Questions assumptions of transmural heterogeneity in rodent hearts; leaves open applicability to humans or disease states.
Poole et al. (1990) studied this question. Subepicardium vs Subendocardium was evaluated on Capillary surface area per volume of muscle fiber and other geometric parameters. No systematic difference was found in fiber size, capillary diameter, or capillary surface per volume of muscle fiber between the subepicardium and subendocardium in rat hearts.
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