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Our previous results show that recombinant gp41 ( aa565-647 ), the extracellular domain of HIV-1 transmembrane glycoprotein , stimulates interleukin-10 ( IL-10 ) production in human monocytes .
 ( protein: aa565-647, None) , ( protein: IL-10, None) , ( cell type: human monocytes, None) , ( protein: extracellular domain, None) , ( protein: recombinant gp41, None) , ( protein: interleukin-10, None) , ( protein: HIV-1 transmembrane glycoprotein, 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: aa565-647, None) , ( protein: IL-10, None) , ( cell type: human monocytes, None) , ( protein: extracellular domain, None) , ( protein: recombinant gp41, None) , ( protein: interleukin-10, None) , ( protein: HIV-1 transmembrane glycoprotein, None) 