tokens: Stimulation of purified T lymphocytes by a combination of monoclonal antibodies directed at CD2 and CD28 adhesion molecules gives rise to a long lasting proliferation in the absence of accessory cells .
folded_tokens: stimulation of purified t lymphocytes by a combination of monoclonal antibodies directed at cd2 and cd28 adhesion molecules gives rise to a long lasting proliferation in the absence of accessory cells .
labels: O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O B-protein_molecule B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O O B-cell_type I-cell_type O