Journal article

Antigen-independent maturation of CD2, CD11a/CD18, CD44, and CD58 expression on thymic emigrants in fetal and postnatal sheep

DA Witherden, NJ Abernethy, WG Kimpton, RNP Cahill

Autoimmunity | HARWOOD ACAD PUBL GMBH | Published : 1995

Abstract

We have compared the expression of CD2, CD11a/CD18, CD44, and CD58 and alpha beta and gamma delta T cells emigrating from the fetal and postnatal thymus. We report that both gamma delta and the CD4+CD8- and CD4-CD8+ subsets of alpha beta T cells express mature levels of the adhesion molecules CD11a/CD18, CD44, and CD58 upon emigration from the thymus. Whereas CD44 is up-regulated on gamma delta + thymocytes prior to export, down-regulation of both CD11a/CD18 and CD58 occurs prior to emigration from the thymus, suggesting that down-regulation of these molecules may be a final maturational step taken by developing gamma delta T cells before their export from the thymus. In contrast, there is c..

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University of Melbourne Researchers