Linked Life Data

6227390

Source:http://linkedlifedata.com/resource/pubmed/id/6227390

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1984-1-7
pubmed:abstractText
The antigenic phenotype of individual PHA-induced T lymphocyte colonies was studied with a direct immunofluorescence technique using fluorescein-labeled anti-Leu-2a and anti-Leu-3a antibodies. Of the colonies grown from mononuclear peripheral blood cells 85% were Leu-3a+ (inducer/helper phenotype), 12% were Leu-2a+ (suppressor/cytotoxic phenotype), and 3% contained equal numbers of Leu-2a+ and Leu-3a+ cells. Fluorescence-activated cell sorter (FACS) separated T-cell subsets showed that Leu-2a+ cells and Leu-3a+ cells form exclusively Leu-2a+ and Leu-3a+ colonies, respectively. Leu-3a+ cells formed colonies in both the absence and presence of conditioned medium (PHA-CM), whereas colony formation by Leu-2a+ cells was absolutely dependent on PHA-CM. Mixing experiments with FACS-separated T-cell subsets showed that Leu-2a+ cells inhibit colony formation by Leu-3a+ cells in a cell dose-dependent manner both in the presence and absence of PHA-CM. Phenotype analysis of individual colonies from mixing experiments strongly suggested monoclonal proliferation in the present colony assay system. The majority of expanded T-cell colonies showed helper activity in a reverse hemolytic plaque-forming B-cell assay, although to a lesser degree as compared to that of freshly isolated T lymphocytes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0008-8749
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
276-86
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Colony formation by subpopulations of human T lymphocytes. III. Antigenic phenotype and function of colony-forming cells, colony cells, and their expanded progeny.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't