8967
However, neither TNF or LPS stimulated VCAM-1 expression in HUAECs .
 ( cell type: HUAECs, None) , ( protein: VCAM-1, None) , ( protein: TNF, 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: HUAECs, None) , ( protein: VCAM-1, None) , ( protein: TNF, None) 