2913
This protein complex was more abundant in U-937 , K-562 , and HeLa cell extracts than in Raji , HF , BALB/c 3T3 , or HL-60 cells , but the binding activity was altered only twofold after TPA treatment.
 ( cell line: HL-60 cells, None) , ( cell line: Raji, None) , ( cell line: HF, None) , ( protein: protein complex, None) , ( cell line: BALB/c 3T3, 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:
 ( cell line: HL-60 cells, None) , ( cell line: Raji, None) , ( cell line: HF, None) , ( protein: protein complex, None) , ( cell line: BALB/c 3T3, None) 