3751
Although CD40 ligand ( CD40L ) triggers a shift from dephosphorylated to phosphorylated pRB and proliferation of B cells , the addition of exogenous IL-6 to CD40L -treated B cells does not alter either pRB or proliferation, as observed in MM cells .
 ( protein: CD40 ligand, None) , ( cell type: B cells, None) , ( protein: IL-6, None) , ( protein: pRB, None) , ( cell type: B cells, None) , ( protein: CD40L, None) , ( cell line: MM cells, None) , ( protein: pRB, None) , ( protein: CD40L, 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: CD40 ligand, None) , ( cell type: B cells, None) , ( protein: IL-6, None) , ( protein: pRB, None) , ( cell type: B cells, None) , ( protein: CD40L, None) , ( cell line: MM cells, None) , ( protein: pRB, None) , ( protein: CD40L, None) 