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Volume 24, Number 1-2 >

A STUDY OF THE FLUCTUATING FACTORS IN THE SEMINIFEROUS EPITHELIAL CYCLE IN MICE : WITH SPECIAL ATTENTION TO STATISTICAL STUDIES ON DIURNAL FLUCTUATIONS AND ON VARIATIONS DUE TO TESTES AND TESTIS LOCI IN THE RELATIVE FREQUENCIES OF THE STAGES

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/jjvr.24.1-2.43

Title: A STUDY OF THE FLUCTUATING FACTORS IN THE SEMINIFEROUS EPITHELIAL CYCLE IN MICE : WITH SPECIAL ATTENTION TO STATISTICAL STUDIES ON DIURNAL FLUCTUATIONS AND ON VARIATIONS DUE TO TESTES AND TESTIS LOCI IN THE RELATIVE FREQUENCIES OF THE STAGES
Authors: SUNG, Weng Kong Browse this author
Issue Date: May-1976
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 24
Issue: 1-2
Start Page: 43
End Page: 50
Abstract: A total of 30 male mice, DD strain, between 50~60 days old, were divided into 6 groups consisting of 5 mice each. All the mice had been reared in an almost constant temperature at between 22〜24℃ and they also had an almost constant daily period of natural and artificial light from about 6 am to about 6 pm. These conditions were maintained throughout the experimental period. The groups were killed at four-hour intervals over a 24-hour period. Cross sections of seminiferous tubules were examined microscopically to determine whether the diurnal fluctuations and variations due to testes within animals or due to loci within testes might exist in the relative frequencies of the stages. Identification of each stage of the cycle applied here was similar to that described previously by ROOSEN-RUNGE & GIESEL. The method of testing for significant differences in the frequencies among groups of each experiment is based on discriminatory analysis and the results obtained were as follows : 1) A typical cellular association arrangement for each stage was found in all but a few seminiferous tubules observed here. 2) No obvious diurnal fluctuation in the relative frequency of the stages was found among the 6 times required for removal of testes or among the uniform periods dispersed throughout a 24-hour period. 3) Significant differences in the frequencies of the stages were found between testes within individuals and among 3 loci within testes (P<0.05).
Type: bulletin (article)
URI: http://hdl.handle.net/2115/2080
Appears in Collections:Japanese Journal of Veterinary Research > Volume 24, Number 1-2

Submitter: 獣医学部図書室

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