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J Exp Med. 1989 Jan 1;169(1):291-6.

Active and latent forms of transforming growth factor beta activity in synovial effusions.

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1
Department of Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232.

Abstract

We have evaluated the possible involvement of TGF-beta in rheumatoid arthritis by assay of 16 cell-free synovial fluids for the presence of its active and "latent" forms. Evidence has been obtained for TGF-beta-like activity in synovial effusions by four criteria: (a) TGF-beta receptor competition, (b) soft-agar colony formation of AKR-2B and NRK-49F indicator cells, (c) immunological neutralization of the biological activity, and (d) biochemical activation of a latent form.

PMID:
2909658
PMCID:
PMC2189180
[Indexed for MEDLINE]
Free PMC Article
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