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 .
 G protein, G(S)alpha
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 G protein, G(S)alpha