13189
When levels were semiquantitated using densitometry , significant decreases of TCRzeta (P = 0.029) and p56(lck) (P = 0.029) but not CD3epsilon (P = 0.131), compared with control levels, were found.
 ( protein: TCRzeta, None) , ( protein: CD3epsilon, None) , ( protein: p56(lck), 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: TCRzeta, None) , ( protein: CD3epsilon, None) , ( protein: p56(lck), None) 