ArticleAnatomy and embryology1996
Development of cardiac musculature in the cranial vena cava of rat embryos.
Article in Anatomy and embryology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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0 citing papers in PubMed, 6 citations in OpenAlex.
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4 authors at 4 institutions in 2 countries.
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Abstract
Development of cardiac musculature in the rat cranial vena cava (common cardinal vein or duct of Cuvier) was examined by immunohistochemistry and transmission electron microscopy. Undifferentiated cardiac myocytes were detected in the cranial vena cava wall of rat embryos after 12.5 days post-coitum (dpc). The tunica media of the cranial vena cava was composed of cardiac myocytes after formation of the endothelium. Therefore, the cranial vena cava may be not only a part of the venous system but also of the heart. Myocytes in the cranial vena cava contained developing myofibrils, mitochondria and intercalated discs similar to those found in the myocytes in heart. Striated myofibrils began to differentiate as soon as myocytes appeared in the vena cava wall, and myocytes with differentiating myofibrils occur in the wall as the first component of the tunica media at 12.5 dpc. We concluded that the cardiac musculature in the vena cava is not a secondary extension into the tunica media after birth only in the rat, but a basic structure formed in all mammals during early embryonic development.
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