CD40 is a receptor that is critical for the survival , growth , differentiation , and isotype switching of B lymphocytes .
cd40 is a receptor that is critical for the survival , growth , differentiation , and isotype switching of b lymphocytes .
B-protein_molecule O O O O O O O O O O O O O O O B-other_name I-other_name O B-cell_type I-cell_type O