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T‐cell populations in the pig intestinal lamina propria: memory cells with unusual phenotypic characteristics
Author(s) -
Haverson,
M S Bailey,
( Stokes
Publication year - 1999
Publication title -
immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.297
H-Index - 133
eISSN - 1365-2567
pISSN - 0019-2805
DOI - 10.1046/j.1365-2567.1999.00658.x
Subject(s) - lamina propria , phenotype , biology , cd8 , cell , microbiology and biotechnology , immunology , epithelium , genetics , antigen , gene
We have previously presented evidence of a highly organized and compartmentalized structure of the small intestinal lamina propria of the pig. In this study, we conducted a detailed analysis of the T‐cell populations found at this site, and compared these T cells with cell populations found in other tissue sites and the periphery. We showed that the CD4 + and CD8 + T‐cell populations found in the pig gut are of memory phenotype, defined by CD45 isoform expression, but show few signs of recent activation. They show a high degree of phenotypic and therefore presumably functional homogeneity. Both CD4‐ and CD8‐positive cells show strong parallels in the patterns of surface molecule expression, suggesting similar pressures on differentiation. The unique combination of surface molecules found on lamina propria T cells is found only infrequently on cells in other lymphoid sites.