tokens: In contrast , repeated injections of SEA cause CD4+ T-cell deletion and anergy in the remaining CD4+ T cells , characterized by reduced expression of IL-2 at mRNA and protein levels .
folded_tokens: in contrast , repeated injections of sea cause cd4+ t-cell deletion and anergy in the remaining cd4+ t cells , characterized by reduced expression of il-2 at mrna and protein levels .
labels: O O O O O O B-protein_molecule O B-cell_type I-cell_type O O O O O O O B-cell_type I-cell_type O O O O O O B-protein_molecule O O O O O O