13017
Prostaglandin E2 ( PGE2 ), a pleiotropic immunomodulatory molecule , is observed at elevated levels during HIV-1 infection as well as during the course of other pathogenic infections.
 ( protein: pleiotropic immunomodulatory molecule, 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: pleiotropic immunomodulatory molecule, None) 