English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Many animal models for organ specific neoplasia have been developed and used to study the pathogenesis of cancer. Morphologic studies have usually concentrated on the response of target cells, whereas biochemical investigations have usually employed whole organ homogenates. Since hepatocytes comprise nearly 90% of the liver's mass and 70-80% of its DNA, alterations in DNA replication, covalent binding and DNA repair of nonparenchymal cells are usually obscured when whole organ homogenates are used. By utilizing cell separation methods, we have been able to demonstrate differences between hepatocyte and nonparenchymal cell replication. DNA damage and repair following exposure to a variety of hepatocarcinogen. Differences in removal of simple O6-alkylguanine and DNA replication correlate with cell specific carcinogenesis of simply alkylating agents. For several other procarcinogens, including 2-acetylaminofluorene and dinitroluene, cell specificity appears to reside primarily in the differential metabolic competence of hepatocytes and nonparenchymal cells. This results in greater covalent binding of the carcinogen to hepatocyte DNA, although the DNA adducts are removed at a similar rate in both cell types.

Cell specificity in DNA binding and repair of chemical carcinogens.