11138
The present study demonstrates that human THP-1 promonocytic cells , engineered by gene transfer to constitutively produce human growth hormone ( hGH ), secreted depressed amounts of TNF-alpha in response to challenge by LPS .
 ( protein: TNF-alpha, None) , ( cell line: THP-1 promonocytic cells, 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: TNF-alpha, None) , ( cell line: THP-1 promonocytic cells, None) 