Analyses of CD4+ and CD8+ T lymphocytes were performed according to our previous study [25 (link)]. The percentages of CD4+ and CD8+ T lymphocytes were determined using flow cytometry with staining by the surface markers including phycoerythrin- (PE-) labeled anti-mouse CD3 (eBioscience), allophycocyanin- (APC-) labeled anti-mouse CD4 (eBioscience), and fluorescein isothiocyanate- (FITC-) labeled anti-mouse CD8 (eBioscience) antibodies. All the samples were analyzed regarding fluorescence profiles on a FACScan flow cytometer (BD Biosciences) by SYSTEM II software (Coulter).
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