2775
Additionally, herbimycin A , a tyrosine kinase inhibitor , blocked the R24 -stimulated increase in proliferation but not cytotoxicity at concentrations consistent with specificity for tyrosine kinases .
 ( protein: tyrosine kinases, None) , ( protein: tyrosine kinase, None) , ( protein: R24, 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: tyrosine kinases, None) , ( protein: tyrosine kinase, None) , ( protein: R24, None) 