2440
Because leukocyte-mediated tissue damage is an important component of the pathologic picture in ischemia/reperfusion , we have sought mechanisms by which PMNs are directed into hypoxic tissue .
 ( cell type: PMNs, 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: PMNs, None) 