10822
Expression of the stimulatory G protein , G(S)alpha , can vary over a 3-fold range in human tissues and in rodent central nervous system .
 ( protein: G protein, None) , ( protein: G(S)alpha, 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: G protein, None) , ( protein: G(S)alpha, None) 