PMID: 610865Jan 1, 1977Paper

Relationship between cell proliferation, chromatin template activity and accumulation of nuclear proteins

Cell Biology International Reports
S M Whelly, R Baserga

Abstract

Trypsinization of confluent monolayers of WI-38 cells causes an extensive loss of nuclear proteins. The loss of nuclear proteins is restored only several hours after the cells have been replated at a lower density in 10% serum. When trypsinized fibroblasts are replated at a lower density in 10% serum, there is also a sustained progressive leading to DNA synthesis and cell division. If 0.3% serum is used instead of 10%, there is a modest increase in nuclear template activity, but not accumulation of nuclear proteins and no DNA synthesis or cell division.

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