9565
IL-2 and T cell antigen receptor complex induction of STAT3alpha serine 727 phosphorylation is dependent on the activity of the MEK /ERK pathway .
 protein: /ERK; protein: T cell antigen receptor complex; protein: IL-2; protein: MEK; protein: STAT3alpha
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: /ERK, T cell antigen receptor complex, IL-2, MEK, STAT3alpha 
Answer:
 protein: /ERK; protein: T cell antigen receptor complex; protein: IL-2; protein: MEK; protein: STAT3alpha