14782
This difference in the number of binding sites could be due to differences in cell surface ( UT-7 cells are 20% smaller than the parental UT-7 cells ) or in receptor turnover.
 ( cell line: UT-7 cells, None) , ( cell line: UT-7 cells, 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:
 ( cell line: UT-7 cells, None) , ( cell line: UT-7 cells, None) 