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The presence of the sulfhydryl agent dithiothreitol did not affect results suggesting the absence of disulfide bridges in the steroid binding domain of the receptor.
 protein: steroid binding domain; protein: disulfide bridges
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: steroid binding domain; protein: disulfide bridges