In the case of thymic selection the mechanism is more subtle depending on the mutual repression of Nur77 and GR .
in the case of thymic selection the mechanism is more subtle depending on the mutual repression of nur77 and gr .
O O O O B-other_name I-other_name O O O O O O O O B-other_name I-other_name O B-protein_molecule O B-protein_family_or_group O