8994
The recent identification and characterization of several key transcription factors has helped to elucidate the molecular mechanisms of T helper cell cytokine gene expression .
 DNA: T helper cell cytokine gene; protein: transcription factors
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: T helper cell cytokine gene, transcription factors 
Answer:
 DNA: T helper cell cytokine gene; protein: transcription factors