13613
Low concentrations of RA inhibiting IgE synthesis (10(-10) mol/L) affected neither B-cell proliferation nor the production of IgA , IgG , and IgM .
 ( protein: IgG, None) , ( protein: IgM, None) , ( protein: IgA, None) , ( protein: IgE, 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: IgG, None) , ( protein: IgM, None) , ( protein: IgA, None) , ( protein: IgE, None) 