ISSN:
0021-9541
Schlagwort(e):
Life and Medical Sciences
;
Cell & Developmental Biology
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Biologie
,
Medizin
Notizen:
3T3 mouse fibroblasts in 10% calf serum cease to increase in number at confluence. SV40-transformed 3T3 cells lose their sensitivity to this growth control and so are able to reach multilayered cell densities. We previously described a polyploid revertant line F1SV101, isolated from a SV40-transformed cell, that has a low maximum cell density (Pollack et al., '68), despite the continued presence in this revertant of SV40-specific DNA, RNA and Tantigen. We have examined the mechanism by which the revertant maintains a low saturation density, and find that at confluence the revertant and 3T3 are both reduced in mitotic index, fraction of cells synthesizing DNA, and rate of DNA synthesis. The transformed cell does not respond to confluence. None of the lines sheds intact cells into the medium at confluence.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jcp.1040820111
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