1725
We also examined tow of the XISTE- ring chromosomes to determine whether genes that are normally silent on an inactive X are expressed from these chromosomes .
 chromosomes, inactive X, XISTE- ring chromosomes, genes
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:
 chromosomes, inactive X, XISTE- ring chromosomes, genes