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Summary of FC analysis of CD25 and CD26 expressed on CD4+ CD45R0+ T cells stimulated with PPD and M. avium subsp. paratuberculosis SAg. Significant differences were noted between control animals and animals infected with M. avium subsp. paratuberculosis as indicated in the figure (a, P < 0.01; b, 0.01 < P < 0.05).
