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A cytophotometric study of DNA content in Purkinje cells of the cerebellum of rats, cats, chicken and humans (Feulgen staining) revealed that in a certain number of cells the amount of NDA ranged between the diploid and tetraploid level (H2C cells). The incidence of H2C Purkinje cells varied among the species studied. In rats, which were studied most thoroughly, these cells amounted on average to 3%. In some rats, as well as in some cats and chickens H2C Purkinje cells were entirely absent. In the group of animals possesing H2C Purkinje cells, great interindividual differences were observed. In rats for instance, the incidence of these cells varied from 1 to 23 per cent. Topographic analyses carried out in rat and human cerebellum revealed that H2C Purkinje cells occurred more frequently in the hemispheres than in the vermis. No significant differences were found in the number of H2C Purkinje cells in healthy and Kilham-DNA-virus infected rats. Densitometric analysis of the distribution of nuclear chromatin showed that H2C Purkinje cells were richer in condensed chromatin, especially in the region of the nucleolus, which apparently contains the hyperploid surplus of DNA. It is proposed that the phenomenon of DNA hyperdiploidy arises as a result of either incomplete S-phase in some immature Purkinje cell precursors or the amplification of some DNA sequences particularly those localized in the nucleolar region.
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
May 1993,
The Journal of comparative neurology,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1980,
Histopathology,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
April 1969,
Tsitologiia,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
July 1967,
Biulleten' eksperimental'noi biologii i meditsiny,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
October 1967,
Journal of gerontology,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1962,
Acta - Unio Internationalis Contra Cancrum,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1976,
Acta cytologica,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1980,
Histochemistry,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1975,
Folia histochemica et cytochemica,
V J Brodsky, and
T L Marshak, and
V Mares, and
Z Lodin, and
Z Fülöp, and
E A Lebedev
January 1965,
Cytogenetics,
