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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
10
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pubmed:dateCreated |
1988-12-8
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pubmed:abstractText |
The lineage and stage specificity of human isotype switch recombination was investigated by examining the IgH gene configuration in 61 hemopoietic malignancies representing different stages of B and T cell development. An unexpectedly high frequency (20%) of IgM-producing B cell leukemias and lymphomas had undergone CH gene rearrangements and deletions consistent with attempted switch recombination. These CH gene alterations were found on productive, non-productive, and 14q+ chromosomes. These data support the concept of a non-specific (common) switch recombinase activity that is often ineffective. No evidence of such switch recombination was found in 25 mu- or mu+ pre-B cell leukemias with the single exception of a mu- pre-B leukemia in which subsets of the cells were producing gamma- or alpha-H chains. The switch recombinase activity gamma- or alpha-H chains. The switch recombinase activity may be restricted to the B cell lineage, inasmuch as CH gene deletions were not observed in T lineage malignancies.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0022-1767
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
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pubmed:volume |
141
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3625-33
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:3141501-Cell Transformation, Neoplastic,
pubmed-meshheading:3141501-Chromosome Deletion,
pubmed-meshheading:3141501-Gene Rearrangement, B-Lymphocyte,
pubmed-meshheading:3141501-Hematopoietic Stem Cells,
pubmed-meshheading:3141501-Humans,
pubmed-meshheading:3141501-Immunoglobulin Constant Regions,
pubmed-meshheading:3141501-Immunoglobulin Heavy Chains,
pubmed-meshheading:3141501-Immunoglobulin Switch Region,
pubmed-meshheading:3141501-Leukemia, B-Cell,
pubmed-meshheading:3141501-Lymphocyte Activation,
pubmed-meshheading:3141501-Precursor B-Cell Lymphoblastic Leukemia-Lymphoma,
pubmed-meshheading:3141501-Recombination, Genetic,
pubmed-meshheading:3141501-T-Lymphocytes,
pubmed-meshheading:3141501-Translocation, Genetic
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pubmed:year |
1988
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pubmed:articleTitle |
Lineage and stage specificity of isotype switching in humans.
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pubmed:affiliation |
Department of Pediatrics, University of Alabama, Birmingham 35294.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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