tokens: However , even the cells expressing very high levels of exogenous Bcl-2 eventually underwent differentiation without a significant decrease in the synthesis of Bcl-2 .
folded_tokens: however , even the cells expressing very high levels of exogenous bcl-2 eventually underwent differentiation without a significant decrease in the synthesis of bcl-2 .
labels: O O O O O O O O O O O B-protein_molecule O O O O O O O O O O O B-protein_molecule O