9164
Since human immunodeficiency virus type 1 ( HIV-1 ) replication is known to be favored under oxidative stress conditions, ex vivo experiments using uninfected PBMCs , primary monocytes or a latently infected promonocytic U1 cell line show that HIV-1 replication and reactivation, monitored by p24 antigen measurement , are inhibited by PAO in a time- and concentration-dependent manner .
 ( protein: p24 antigen, None) , ( cell type: primary monocytes, None) , ( cell type: PBMCs, None) , ( cell line: promonocytic U1 cell line, 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: p24 antigen, None) , ( cell type: primary monocytes, None) , ( cell type: PBMCs, None) , ( cell line: promonocytic U1 cell line, None) 