Key result
Electron microscopic analysis of human auricular myocardium revealed that its ultrastructure and organelle distribution differ from other mammalian heart muscles only quantitatively.
This early electron microscopic study describes the ultrastructure of human auricular myocardium, noting only quantitative differences compared to other mammals.
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Human auricular ultrastructure is quantitatively similar to other mammals; extends comparative anatomy but leaves functional relevance open.
Portions of auricular myocardium obtained surgically from a series of 11 cases of congenital and rheumatic heart disease were embedded for electronmicroscopic study. The normal distribution of the organelles in the ultrastructure of the human heart is described. The difference between human and other mammalian heart muscles appears to be only quantitative.
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Arthur A. Stein (1962) studied this question. Electron microscopic analysis of human auricular myocardium revealed that its ultrastructure and organelle distribution differ from other mammalian heart muscles only quantitatively.
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