12461
By contrast, the amounts of actin and beta-tubulin were not significantly altered.
 ( protein: actin, None) , ( protein: beta-tubulin, 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: actin, None) , ( protein: beta-tubulin, None) 