9723
Although subtle gene movements within those defined topographical regions cannot be excluded by this study, the results indicate that tissue specificity of gene expression is not accompanied by drastic changes in gene nuclear topography , rather suggesting that gene organization within the nucleus may be primarily dependent on structural constraints imposed on the respective chromosomes .
 ( DNA: chromosomes, 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: chromosomes, None) 