12284
Using immunological cross-linking to mimic receptor engagement by natural ligands, we now show that CD15 ( Lewis X ), a monocyte counter-receptor for endothelial selectins may participate in this response.
 ( protein: endothelial selectins, None) , ( protein: monocyte counter-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: endothelial selectins, None) , ( protein: monocyte counter-receptor, None) 