10938
After 4 hours, IL-1 beta and IL-8 concentration of the cell-free supernatant had increased by 268 +/- 36% and 210 +/- 7%, respectively, and cellular MCP-1 content had increased by 170 +/- 8%.
 ( protein: MCP-1, None) , ( protein: IL-1 beta, None) , ( protein: IL-8, 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: MCP-1, None) , ( protein: IL-1 beta, None) , ( protein: IL-8, None) 