These initial changes are followed by the eventual loss of TCR zeta chain and p56 ( lck ) and a marked decrease in cytotoxic function .
these initial changes are followed by the eventual loss of tcr zeta chain and p56 ( lck ) and a marked decrease in cytotoxic function .
O O O O O O O O O O B-protein_subunit I-protein_subunit I-protein_subunit O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O O O O B-other_name I-other_name O