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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1979-9-27
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pubmed:abstractText |
Exposure of H-4-IIE-C3 rat hepatoma cell cultures to the synthetic glucocorticoid, dexamethasone, results in an inhibition of cellular proliferation which is not the result of steroid-induced cytolysis. A significant decrease in both the rate of DNA synthesis and DNA content precedes a detectable effect on cell number. Continuous culture of H-IIE-C3 cells in medium containing 10(-5) M dexamethasone results in the selection of a steroid-resistant cell population that has the growth characteristics of unselected sensitive cultures and shows normal steroid induction of tryosine transaminase. Selection is a slow process requiring 24 to 36 months to obtain a phenotypically stable resistant cell line, and can be subdivided into three phases--a sensitive phase, adaptation and resistance. A comparison of the karyotypes of unselected and resistant cultures shows that the selection process enriches for a dexamethasone-resistant subpopulation.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0073-5655
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
15
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
128-37
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pubmed:dateRevised |
2009-11-11
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pubmed:meshHeading |
pubmed-meshheading:37155-Animals,
pubmed-meshheading:37155-Cell Division,
pubmed-meshheading:37155-Cell Line,
pubmed-meshheading:37155-Cells, Cultured,
pubmed-meshheading:37155-DNA, Neoplasm,
pubmed-meshheading:37155-Dexamethasone,
pubmed-meshheading:37155-Drug Resistance,
pubmed-meshheading:37155-Liver Neoplasms, Experimental,
pubmed-meshheading:37155-Rats,
pubmed-meshheading:37155-Tyrosine Transaminase
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pubmed:year |
1979
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pubmed:articleTitle |
Selection of a dexamethasone-resistant H-4-IIE-C3 rat hepatoma tissue-culture line.
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pubmed:publicationType |
Journal Article
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