ISSN:
1432-0878
Keywords:
Thymus
;
Mouse
;
Mitosis
;
Circadian rhythm
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The mitotic and pyknotic indices were calculated over a period of 24 hrs in four different zones of the mouse thymus (Balb/C). Counts were based on 1 micron sections of Epon-embedded tissue. This technique gives a more accurate mitotic index than has been calculated in the past because mitotic figures in the prophase stage are more easily recognizable. Mitotic as well as pyknotic index showed a distinct diurnal rhythm in the subcapsular zone, the rhythm being less distinct towards the medulla, where no significant diurnal fluctuations were demonstrated. It was shown that the index variations could be correlated to significant variations in the mitotic time.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00306935
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