Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1985-4-22
pubmed:abstractText
A survey of survival curves in the literature, for clonogenic cells (clonogens) in normal tissues, highlights the following features: the sensitivity of some human and dog clonogens apparently is greater than that of their counterparts in mice and sheep, assessed in vitro. However, this should be interpreted with caution because of the possibility of cell selection and the ability to modify sensitivity markedly in some systems by variations in growth conditions; extrapolation numbers are in general higher when assessed in vivo than in vitro. This is due partly to the lack of measurements of repair of potentially-lethal damage using many assays in vitro. This feature increases the extrapolation number when measured using transplantation assays in vivo; epithelial clonogens in vivo demonstrate a remarkable similarity in sensitivity between tissues. The range is similar for clonogens assayed in situ or by transplantation, and this argues against the possibility that a resistant subpopulation may be selected in most assays in situ. It is emphasized from the comparisons that caution must be exercised in extrapolating results, obtained for clonogens assayed in vitro or by transplantation in vivo, to the situation in situ.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0020-7616
pubmed:author
pubmed:issnType
Print
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3-16
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Survival curves for normal-tissue clonogens: a comparison of assessments using in vitro, transplantation, or in situ techniques.
pubmed:publicationType
Journal Article, Comparative Study, In Vitro, Review, Research Support, Non-U.S. Gov't