## Abstract The effects of hibernation and 1, 2, 4, 8, 12, 16, and 20 weeks of coldβexposure (5 Β± 1Β° C) were studied on the testes of 100 adult, male hamsters (__Mesocrietus auratus__, Waterhouse), having initial body weights of 80 to 100 gm. Half of these animals were maintained on an eightβhour p
The effect of hibernation on the replacement of blood in the golden hamster
β Scribed by Lyman, Charles P. ;Weiss, Leon P. ;O'Brien, Regina C. ;Barbeau, Adele A.
- Publisher
- John Wiley and Sons
- Year
- 1957
- Tongue
- English
- Weight
- 737 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
β¦ Synopsis
While it has been established that cellular proliferation is suppressed during hibernation in ~mammals, (Sarnat and Hook, '42; Lyman and Dempsey, '51; Lyman and Fawcett, '54) the extent and consequences of this suppression have not been fully explored. It appears logical that a reduction of proliferation during hibernation would result in a deficit of cells when the aiiimal aroused unless the life of the cells was prolonged by the physiological state of hibernation. A study This research was supported in part by U. 8. Air Force Contract No. A. F. 33 (038)-18133 and in part by U. 8. Public Health Grant Hema C-310.
π SIMILAR VOLUMES
Department of Anatomy, New York Medical College, New YOTk, N. Y. l This project was supported by O.N.R. contract 2754( 01). zThe authors wish to express their thanks to Grace House and Maravene Miller for their invaluable assistance. \*Since the same general trends were shown in this age group as in
DNA synthesis was studied in vitro in lymphoid tissue taken from hibernating, cold adapted and active golden hamsters in a n attempt to elucidate the mechanism of suppressed DNA synthesis during hibernation. The rates of DNA synthesis a t temperatures varying from 4 to 37Β°C were greatest i n cells f
## Abstract Previous studies found that elimination of the geomagnetic field (GMF) interferes with the normal brain functions, but the underlying mechanism remains unknown. The present study examined the effects of longβterm exposures to a nearβzero magnetic environment on the noradrenergic activit