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 .
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 .
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