2334
1 alpha,25-(OH)2D3 inhibited CD23 expression in U937 cells , yet failed to modulate CD23 expression in B cells .
 ( protein: CD23, None) , ( cell line: U937 cells, None) , ( cell type: B cells, None) , ( protein: CD23, 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: CD23, None) , ( cell line: U937 cells, None) , ( cell type: B cells, None) , ( protein: CD23, None) 