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[Changes in the cell cycle duration and karyotype of murine L cells with a shift in the mode of cultivation].

Authors
Type
Published Article
Journal
Tsitologiia
Publication Date
Volume
26
Issue
10
Pages
1156–1160
Identifiers
PMID: 6393470
Source
Medline

Abstract

A suspension subline LS of mouse fibroblasts L was adapted to the growth in monolayer (LSM subline). The duration of cell cycle and its phases was determined for both the sublines synchronized by a double thymidine block. The duration of cell cycle for LS cells is 17.0 hours, with G1, S and G2 + M being 8.8, 6.3 and 1.8 hours, resp., for LSM cells corresponding values being 31.6, 15.6, 11.0 and 4.8 hours. The karyotype of LSM cells differs from that of LS cells only slightly: there is a redistribution between the numbers of cells with 55 and 56 chromosomes, and a decrease in the number of polyploid cells from 2.0 till 0.2%. The data obtained indicate the heterogeneity of the L line culture which contains cells with long and short cycles. Depending on the mode of cultivation (suspension or monolayer), there is a certain predominance of population either with short or with long cell cycle.

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