2591
Although TK activity was consistently observed by immunoblotting extracts from activated RAW 264.7 cells , LPS-induced phosphotyrosine residues were not observed from similarly treated CHO/CD14 cells .
 ( cell line: CHO/CD14 cells, None) , ( cell line: RAW 264.7 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:
 ( cell line: CHO/CD14 cells, None) , ( cell line: RAW 264.7 cells, None) 