Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 86 (1979) > Number 4
Document Type
Research
Keywords
cell death, x-irradiation, histological study, embryonic chicken mandible
Abstract
The sensitive period for the induction by x-irradiation of reduced mandibles in chick embryos was determined to be during the 5th day of incubation. Variations in mandibular anomalies can be correlated with the incidence and frequency of cell deaths. As exhibited by control mandibles, cell deaths around the distal ends of Meckel' s cartilages through the 7th day may aid distal cartilage elongation. The variety of anomalies resulting from teratogenic doses is due, in part, to differences in sensitivity between embryos and their ability to recover from radiation damage. Bone development (initial ossification) in experimental embryos was retarded from 12 to 24 hours. The mandibular bones of the experimental embryos conformed to the abnormally curved and/or bent cartilage; membrane bones were shortened and blunted in their long dimensions.
Publication Date
December 1979
Journal Title
Proceedings of the Iowa Academy of Science
Volume
86
Issue
4
First Page
121
Last Page
128
Copyright
©1979 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Bailey Walton, Barbara Ann
(1979)
"Histology of the Embryonic Chick Mandible Following X-Irradiation,"
Proceedings of the Iowa Academy of Science, 86(4), 121-128.
Available at:
https://scholarworks.uni.edu/pias/vol86/iss4/3