3445
A later result of inhibition of this activation pathway by p21(ras) was down-regulation of the activity of the transcription factor AP-1 and subsequent coordinate reductions in IL-2 gene expression and protein production .
 protein: transcription factor; protein: AP-1; protein: p21(ras); DNA: IL-2 gene
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: transcription factor, AP-1, p21(ras), IL-2 gene 
Answer:
 protein: transcription factor; protein: AP-1; protein: p21(ras); DNA: IL-2 gene