However , examination of proteasome activity in these T cells using fluorogenic peptide assays revealed a significant age-related decline in chymotryptic activity .
however , examination of proteasome activity in these t cells using fluorogenic peptide assays revealed a significant age-related decline in chymotryptic activity .
O O O O B-protein_complex O O O B-cell_type I-cell_type O B-peptide I-peptide O O O O O O O B-other_name I-other_name O