Five T-cell clones specific for a T-cell epitope located at the carboxyterminal region of HBxAg were established and found to belong to the CD2/CD4-positive , CD8-negative subtype .
five t-cell clones specific for a t-cell epitope located at the carboxyterminal region of hbxag were established and found to belong to the cd2/cd4-positive , cd8-negative subtype .
O B-cell_line I-cell_line O O O B-protein_substructure I-protein_substructure O O O B-protein_domain_or_region I-protein_domain_or_region O B-protein_family_or_group O O O O O O O O B-cell_line I-cell_line I-cell_line I-cell_line O