1016
Using a highly sensitive mutation screening assay of the DNA- and the steroid -binding region , none of the treated patients revealed any mutation, suggesting that the glucocorticoid receptor in the CLL patients tested is not altered in these domains.
 glucocorticoid receptor
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:
 glucocorticoid receptor