tokens: Stimulation of highly purified human T-cells via CD2 and CD28 adhesion molecules induces and maintains proliferation for more than 3 weeks .
folded_tokens: stimulation of highly purified human t-cells via cd2 and cd28 adhesion molecules induces and maintains proliferation for more than 3 weeks .
labels: O O B-cell_type I-cell_type I-cell_type I-cell_type O O O O O O O O O O O O O O O O