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Tissue densities in developing avian embryosThe density changes in the components of the incubated egg, the embryo, and the embryo's body parts were measured in the course of 21 days of incubation. In the first two-thirds of the incubation period there is a sequence of increasing density among egg contents: amniotic fluid, embryo, yolk, and albumin. As a result, the embryo is located at the bottom of the amniotic fluid, but at the top of the albumin. This position provides the embryo with mechanical protection and a proximity to the egg's air cell. The observed density changes and the asymmetry of these changes among various body parts of the embryo suggest a functional relationship. The density distributions among the body parts are particularly important in gravitational investigations of embryogenesis since they will produce forces tending to dislocate parts of the embryo.
Document ID
19850065079
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smith, A. H.
(California Univ. Davis, CA, United States)
Abbott, U. K.
(California Univ. Davis, CA, United States)
Morzenti, A.
(California, University Davis, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: Physiologist, Supplement
Volume: 27
ISSN: 0031-9376
Subject Category
Life Sciences (General)
Accession Number
85A47230
Funding Number(s)
CONTRACT_GRANT: NSG-7493
Distribution Limits
Public
Copyright
Other

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