10273
We show that B-CLL cells bind IL-10 with significant specificity and express between 47 and 127 IL-10 receptor sites per cell, with a dissociation constant in the range of 168 to 426 x 10(-12) mol/L.
 ( protein: IL-10, None) , ( protein: IL-10 receptor, None) , ( cell line: B-CLL 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:
 ( protein: IL-10, None) , ( protein: IL-10 receptor, None) , ( cell line: B-CLL cells, None) 