Age changes in the pulsation frequency of the embryonic chick heart
β Scribed by Barry, Alexander
- Publisher
- John Wiley and Sons
- Year
- 1940
- Tongue
- English
- Weight
- 728 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0022-104X
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## Abstract Page missing in this book from 1 to 16.
Phenobarbital was observed to produce cardiovascular malformations in embryonic chicks. Malformations included simple ventricular septal defect, ventricular septal defect associated with dextroposition of the aorta, double outlet right ventricle, and several types of aortic arch anomalies. Embryos w
## Background: Ultrastructural changes of the embryonic heart have been described, and quantitative studies have reported the changes of cellular organelles in late fetal and postnatal development. however, no specific data are available on the quantitative morphology of the individual segments and
## Abstract During animal development complex morphogenetic movements occur. If these movements are controlled by cellβtoβcell adhesiveness, the latter should change during embryonic development. To test this possibility indirectly, heart cells or tissue fragments from chick embryos of one and oneβ