1722
As XIST transcription is well correlated with inactivation of the X chromosome in female somatic cells and spermatogonia , nonexpression of the locus even when it is present suggests that these chromosomes are transcriptionally active .
 ( DNA: XIST, None) , ( cell type: spermatogonia, None) , ( DNA: chromosomes, None) , ( cell type: female somatic cells, None) , ( DNA: X chromosome, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: XIST, None) , ( cell type: spermatogonia, None) , ( DNA: chromosomes, None) , ( cell type: female somatic cells, None) , ( DNA: X chromosome, None) 