9891
Unlike Oct-1 , which is constitutively expressed in many cell types, Oct-2 expression is restricted primarily to B lymphocytes and can be induced in precursor B cells by stimulation with bacterial lipopolysaccharide ( LPS ).
 ( cell type: B lymphocytes, None) , ( protein: Oct-2, None) , ( protein: Oct-1, None) , ( cell type: precursor B cells, 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 lymphocytes, None) , ( protein: Oct-2, None) , ( protein: Oct-1, None) , ( cell type: precursor B cells, None) 