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Relationships between the wave form of QRS complex and the formation of specific cardiac muscle in the free ventricular wall of several species of vertebrates in developing stage



Relationships between the wave form of QRS complex and the formation of specific cardiac muscle in the free ventricular wall of several species of vertebrates in developing stage



Japanese Journal of Veterinary Science 41(2): 109-117



The hearts of chick embryos and goat and dog fetuses were examined by electrocardiography and study of the weight and histology of the ventricular walls. Changes in the wave form of QRS complexes between the fetal and neonatal stages were probably due to changes in the ratio of right to left ventricular mass in dogs, and changes in the penetration of Purkinje fibres into the ventricular wall in chickens and goats.

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Accession: 000734493

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PMID: 439535


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