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The TbsAb.short form induces superior T cell activation. (A–E) The expression level of CD69 on CD4+ and CD8+ T cells was detected after incubating with each TbsAb for 24 h (E:T = 5:1). (F–J) The expression level of CD25 on CD4+ and CD8+ T cells was detected after incubating with each TbsAb for 24 h (E:T = 5:1). *: p < 0.05; **: p < 0.01.
