We also investigated the effects of stimulating T cell blasts with CD80 alone and found that there was a limited requirement for IL-2 in this system .
we also investigated the effects of stimulating t cell blasts with cd80 alone and found that there was a limited requirement for il-2 in this system .
O O O O O O O B-cell_type I-cell_type I-cell_type O B-protein_molecule O O O O O O O O O O B-protein_molecule O O O O