4266
Stimulation of B lymphocytes by either ligation of CD40 Ag or cross-linking the Ig receptor is also insufficient to render B lymphocytes responsive to 1 alpha,25(OH)2D3 .
 ( protein: CD40 Ag, None) , ( cell type: B lymphocytes, None) , ( cell type: B lymphocytes, None) , ( protein: Ig receptor, 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 Ag, None) , ( cell type: B lymphocytes, None) , ( cell type: B lymphocytes, None) , ( protein: Ig receptor, None) 