11653
Upon antigen stimulation, precursor CD4+ T helper (pTh) cells proliferate and differentiate into two populations of effector cells ( eTh1 and eTh2 ), each one expressing a specific pattern of cytokines that distinguishes them from their precursors.
 ( cell type: eTh2, None) , ( cell type: CD4+ T helper (pTh) cells, None) , ( cell type: eTh1, None) , ( cell type: effector cells, None) , ( protein: cytokines, 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:
 ( cell type: eTh2, None) , ( cell type: CD4+ T helper (pTh) cells, None) , ( cell type: eTh1, None) , ( cell type: effector cells, None) , ( protein: cytokines, None) 