13195
In the majority of patients with advanced RCC , peripheral blood T cells express TCRzeta and p56(lck) , and in a subset, reduced levels of these TCRzeta associated molecules are seen that may increase during cytokine -based therapy .
 ( protein: p56(lck), None) , ( protein: TCRzeta, None) , ( protein: TCRzeta associated molecules, None) , ( protein: cytokine, None) , ( protein: TCRzeta, None) , ( cell type: peripheral blood T 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: p56(lck), None) , ( protein: TCRzeta, None) , ( protein: TCRzeta associated molecules, None) , ( protein: cytokine, None) , ( protein: TCRzeta, None) , ( cell type: peripheral blood T cells, None) 