4210
In contrast, in DOX -treated cells , the transcription rate of these genes was unchanged in comparison with control cells .
 control cells, genes, DOX -treated cells
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:
 control cells, genes, DOX -treated cells