8230
However, the sensitivity of cells to these agents is not merely governed by the expression of their receptors and the availability of ligand to bind them.
 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:
 None