12994
Recent reports have demonstrated that differential expression of cell surface molecules, such as adhesion molecule and chemokine receptor , is involved in their recruitment into target tissues.
 ( protein: adhesion molecule, None) , ( protein: chemokine 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: adhesion molecule, None) , ( protein: chemokine receptor, None) 