A light and electron microscopic study on the embryonic development of the rat carotid body

The American Journal of Anatomy
H Kondo

Abstract

The embryonic development of the rat carotid body was studied with electron microscopy. In the 11 mm embryo a cell aggregation consisting of undifferentiated cells and unmyelinated nerve fibers appears on the anterior wall of the third branchial artery. Granule-containing cells appear in the 12 mm embryo and continue to increase in number as the cellular aggregation increases in size and becomes separated from the wall of the third branchial artery. Synapse formation and the appearance of fenestrated capillaries occur almost simultaneously at the 17 mm stage. There are two types of synapses, one with membrane densification and vesicles clustered inside the nerve endings, the other with dense material and vesicles inside the granule-containing cells. At the 20 mm stage the undifferentiated cells send enveloping cytoplasmic processes toward adjacent granule-containing cells and the carotid body anlage displays rudimentary lobules.

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Citations

Mar 1, 1995·Histochemistry and Cell Biology·Y Yamatsu, Y Kameda
Aug 21, 1992·Brain Research. Developmental Brain Research·C Kent, H L Rowe
May 26, 2005·Respiratory Physiology & Neurobiology·Zun-Yi Wang, Gerald E Bisgard
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Aug 21, 2012·Respiratory Physiology & Neurobiology·Steven C Hempleman, Stephen J Warburton
Aug 21, 2012·Respiratory Physiology & Neurobiology·Estelle B GaudaRaul Chavez-Valdez
May 29, 2012·Respiratory Physiology & Neurobiology·Machiko ShirahataLuis E Pichard
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Jun 21, 2002·Developmental Biology·Yoko KamedaOsamu Chisaka
May 10, 2005·Developmental Biology·Yoko Kameda
Dec 15, 2019·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Yoko Kameda
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