Energy Citations Database

Bibliographic Citation

 
Document
For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field.
For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability.
Title X-RAY EFFECTS ON EMBRYOS OF THE PARADISE FISH, WITH NOTES ON NORMAL STAGES
Creator/Author Allen, L.A. ; Mulkay, L.M.
Publication Date1960 Jan 01
OSTI IdentifierOSTI ID: 4843753
Other Number(s)CODEN: GROWA; 0017-4793
Resource TypeJournal Article
Resource RelationGrowth (U.S.); Vol: 24
Research OrgBrigham Young Univ., Provo, Utah
SubjectBIOLOGY AND MEDICINE; ANIMAL CELLS; EMBRYOS; FISH; MALFORMATIONS; MITOSIS; RADIATION EFFECTS; RADIATION INJURIES; RECOVERY; REGENERATION; TISSUES; X RADIATION
Description/Abstract Embryos of the paradise fish were exposed to x rays at different stages of development. Histologic studies were made of several selected organ systems in order to determine the stages at which particular anomalies might be induced. In each organ system certain anomalies were characteristically produced by irradiation at specific developmental stages. In most cases the abnormalities were induced by exposure prior to visible differentiation of the anlagen of the affected structures. Both susceptibility to radiation damage and the ability to regenerate from the damaged condition are directly proportional to the mitotic index of the tissues at the time of and following exposure. Differentiation processes are also susceptible to damage but, when unaccompanied by active mitosis, have less regenerative capacity. Some notes on normal development are also presented. Macropodus differs from the typical teleostean patterns of development in the ear and the gut. The otocyst arises by cavitation of a cranial crest mass which is attached to neutral ectoderm. The gut lumen forms by cavitation of a longitudinal rod of cells rather than by ventral folding of an entodermal plate. (auth)
LanguageEnglish
FormatPages: 131-68
System Entry Date2001 Jun 03

Top