title: Ontogeny of expression of UCHL1 antigen on TcR-1+ (CD4/8) and TcR delta+ T cells.
abstract: The frequency of blood mononuclear cells expressing the 180-kDa splice variant of the common leukocyte antigen identified by the UCHL1 monoclonal antibody (a characteristic of post-thymic cells which have been through a cycle of stimulation) rose in a logarithmic relationship to age between birth and 16 years. At birth only a low frequency of CD4+ (negative for CD 25) and no CD8+ T cells expressed UCHL1. The subsequent increase in UCHL1 expression occurred in parallel on T cells expressing alpha/beta receptors and gamma/delta receptors, suggesting that these subsets participated in post-thymic proliferation in proportion to their numbers in blood. The frequency of UCHL1 expression on CD8 cells was 5-15% less than on CD4 cells.
authors.affiliation: Department of Pediatrics, University of Colorado School of Medicine, Denver 80262.
authors.forename: A R
authors.initials: AR
authors.lastname: Hayward
authors.forename: J
authors.initials: J
authors.lastname: Lee
authors.forename: P C
authors.initials: PC
authors.lastname: Beverley
mesh_terms: D000367:Age Factors; D000911:Antibodies, Monoclonal / Q000276:immunology; D000943:Antigens, Differentiation / Q000276:immunology*; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis*; D001772:Blood Cell Count; D016827:CD8 Antigens; D002454:Cell Differentiation; D006801:Humans; D007231:Infant, Newborn; D016169:Lymphocyte Function-Associated Antigen-1; D011948:Receptors, Antigen, T-Cell / Q000032:analysis; D013601:T-Lymphocytes / Q000145:classification / Q000166:cytology / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation; D000945:Antigens, Differentiation, T-Lymphocyte; D016827:CD8 Antigens; D016169:Lymphocyte Function-Associated Antigen-1; D011948:Receptors, Antigen, T-Cell