1488
In addition to activation of phospholipase C gamma 1 , ligation of this receptor also seems to activate a calcium -independent , CD28 -specific pathway .
 ( protein: CD28, None) , ( protein: phospholipase C gamma 1, 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: CD28, None) , ( protein: phospholipase C gamma 1, None) 