10859
Furthermore, B cells transfected with a chimeric CD8alpha/IL-4Ralpha receptor , which is expressed on the cell surface as a homodimer , constitutively expressed Cepsilon germline transcripts .
 ( protein: chimeric CD8alpha/IL-4Ralpha receptor, None) , ( cell type: B cells, None) , ( RNA: Cepsilon germline transcripts, None) , ( protein: homodimer, 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:
 ( protein: chimeric CD8alpha/IL-4Ralpha receptor, None) , ( cell type: B cells, None) , ( RNA: Cepsilon germline transcripts, None) , ( protein: homodimer, None) 