Ontogeny and thymus-dependence of T cell surface antigens in Xenopus: flow cytometric studies on monoclonal antibody-stained thymus and spleen.

Abstract:

:Recently generated anti-Xenopus T cell monoclonal antibodies (mAbs) to the 120 kDa XTLA-1 determinant and against the putative CD5 and CD8 homologues, together with anti-IgM and anti-MHC class II mAbs, are used in dual colour flow cytometric experiments to characterize cell surface antigenic expression on lymphocytes in thymus and spleen of Xenopus laevis during larval and early adult life and also in metamorphosis-inhibited animals. Histological confirmation of T cell emergence early in larval ontogeny is supplied by cryostat sections stained for CD8. Five-day thymectomy, i.e. prior to T-lineage cell differentiation in the thymus, abolishes T cell marker expression in the spleen for up to 1 year. Moreover, late larval (20 days) or early adult (3 months) thymectomy (i.e. removal after peripheralization of T cells has occurred) also leads to severe depletion of mAb-defined T cells in the spleen.

journal_name

Dev Comp Immunol

authors

Gravenor I,Horton TL,Ritchie P,Flint E,Horton JD

doi

10.1016/0145-305x(95)00030-w

subject

Has Abstract

pub_date

1995-11-01 00:00:00

pages

507-23

issue

6

eissn

0145-305X

issn

1879-0089

pii

0145305X9500030W

journal_volume

19

pub_type

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