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Vascular histodifferentiation in the chick chorioallantoic membrane: A morphometric study by John Z. Shumko; David O. Defouw; Dr. Richard N. Feinberg is a Medicine article available to read on EtoBox.

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This study presents a quantitative description of ultrastructural changes associated with focal histodifferentiation of the chick chorioallantoic membrane (CAM) microvasculature. Early vessels (4-8 days of a 21-day incubation period) were lined by a thin, but continuous endothelium which was characterized by punctate appositional contacts, an incomplete or absent basal lamina, and few plasmalemmal vesicles. During this stage, there was little ultrastructural distinction between CAM arterioles, capillaries, and venules. During the intermediate stage (9-13 days), the arteriolar endothelium displayed more extensive junctional apposition. In addition, the interstitial (periendothelial) space contained more collagen fibrils and increased cell volume densities, some of which resembled presumptive smooth muscle cells. In contrast to the arterioles, endothelial appositions of the venules and capillaries remained punctate during the intermediate stage. The interstitial space of the venules displayed an increase in cell and fibril densities but to a lesser extent than that observed in the arterioles. The capillaries did not exhibit any significant changes in their periendothelial spaces. By

Who reads Vascular histodifferentiation in the chick chorioallantoic membrane: A morphometric study?

Author

John Z. Shumko; David O. Defouw; Dr. Richard N. Feinberg

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0003-276X)

Published

1988

Language

EN

Field

Medicine (Health Sciences)