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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Microsc Microanal. 2014 Apr 17;20(4):1111–1119. doi: 10.1017/S1431927614000828

Figure 5. Cellular and sub-cellular volume fractions in the endocardium, cardiac jelly, and myocardium.

Figure 5

Reconstructed and aligned 3D image stacks of the cardiac layers were manually segmented. The volume of each segmented region was ascertained, allowing for a quantitative comparison of volume fractions. (A) Cellular and extra-cellular volume fractions for each layer of the cardiac wall. As expected, only the cardiac jelly layer contained a significant portion of extra-cellular tissue. (B) Volume fractions of sub-cellular structures (nuclei, mitochondria, myofibrils) within the cells.