1422
A function for protein kinase C -zeta ( PKC -zeta ), a member of the phorbol ester nonresponsive atypical protein kinase C subfamily , in modulating differentiation was examined in the leukemic U937 cell .
 ( protein: protein kinase C -zeta, None) , ( protein: PKC, None) , ( protein: protein kinase C subfamily, None) , ( protein: PKC -zeta, None) , ( cell line: leukemic U937 cell, None) , ( protein: protein kinase C, None) , ( protein: protein kinase C, 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 -zeta, None) , ( protein: PKC, None) , ( protein: protein kinase C subfamily, None) , ( protein: PKC -zeta, None) , ( cell line: leukemic U937 cell, None) , ( protein: protein kinase C, None) , ( protein: protein kinase C, None) 