6794
This correlated with the initiation of signaling downstream of Notch, as evidenced by increased levels of HES-1 transcripts in co-cultivated T cells and of CD23 transcripts in co-cultivated B cells .
 ( cell type: B cells, None) , ( RNA: HES-1 transcripts, None) , ( RNA: CD23 transcripts, None) , ( cell line: co-cultivated T cells, None) , ( protein: CD23, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: B cells, None) , ( RNA: HES-1 transcripts, None) , ( RNA: CD23 transcripts, None) , ( cell line: co-cultivated T cells, None) , ( protein: CD23, None) 