7853
We evaluated the immunoreactivity of the regulatory and catalytic subunits of cAMP-dependent protein kinase ( protein kinase A ) and 1 of its substrates, Rap1 , in platelets from untreated euthymic , manic , and depressed patients with bipolar disorder and healthy subjects .
 ( protein: Rap1, None) , ( cell type: platelets, None) , ( protein: protein kinase A, None) , ( protein: cAMP-dependent protein kinase, 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: Rap1, None) , ( cell type: platelets, None) , ( protein: protein kinase A, None) , ( protein: cAMP-dependent protein kinase, None) 