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Transcriptional control of steroid-regulated gene networks by nuclear receptor proteins results in the coordinate expression of a limited number of target genes .
 target genes, steroid-regulated gene networks, nuclear receptor proteins
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:
 target genes, steroid-regulated gene networks, nuclear receptor proteins