2677
Here, we investigated the accumulation of cyclic AMP ( cAMP ), the hydrolysis of inositol phosphates , protein kinase C ( PKC ) activity and the induction of Egr-1 and c-fos mRNA expression by sIgM- and sIgD- crosslinking to examine differences in the signals mediated through sIgM and sIgD in B104 cells .
 ( protein: protein kinase C, None) , ( cell line: B104 cells, None) , ( protein: PKC, None) , ( protein: sIgM, None) , ( protein: sIgD, 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: protein kinase C, None) , ( cell line: B104 cells, None) , ( protein: PKC, None) , ( protein: sIgM, None) , ( protein: sIgD, None) 