1623
The serum response element ( SRE ) in the c-fos regulatory region participates in induction of transcription by various growth factors and by phorbol esters and subsequent squelching of transcription.
 DNA: SRE; DNA: c-fos regulatory region; protein: growth factors; DNA: serum response element
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: SRE, c-fos regulatory region, growth factors, serum response element 
Answer:
 DNA: SRE; DNA: c-fos regulatory region; protein: growth factors; DNA: serum response element