12167
Recent studies have demonstrated that triptolide is the major active component in the extract that inhibits antigen or mitogen -induced T cell proliferation .
 protein: mitogen
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: mitogen 
Answer:
 protein: mitogen