523
Monocyte tethering by P-selectin regulates monocyte chemotactic protein-1 and tumor necrosis factor-alpha secretion .
 ( protein: P-selectin, None) , ( protein: tumor necrosis factor-alpha, None) , ( protein: monocyte chemotactic protein-1, 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: P-selectin, None) , ( protein: tumor necrosis factor-alpha, None) , ( protein: monocyte chemotactic protein-1, None) 