3043
Pentoxifylline , a trisubstituted xanthine derivative , has been used to decrease blood viscosity and is reasonably well tolerated by most recipients of the drug.
 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:
 None