Single cell assay of a transcription factor reveals a threshold in transcription activated by signals emanating from the T-cell antigen receptor .
single cell assay of a transcription factor reveals a threshold in transcription activated by signals emanating from the t-cell antigen receptor .
O O O O O B-protein_family_or_group I-protein_family_or_group O O O O B-other_name O O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O