13731
PMA activated ERK2 kinase in both alveolar macrophages and monocytes ; however, monocytes consistently showed a significantly greater activation of ERK2 kinase by PMA compared with alveolar macrophages .
 ( cell type: monocytes, None) , ( cell type: alveolar macrophages, None) , ( protein: ERK2 kinase, None) , ( protein: ERK2 kinase, None) , ( cell type: alveolar macrophages, None) , ( cell type: monocytes, 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 type: monocytes, None) , ( cell type: alveolar macrophages, None) , ( protein: ERK2 kinase, None) , ( protein: ERK2 kinase, None) , ( cell type: alveolar macrophages, None) , ( cell type: monocytes, None) 