3448
The interleukin-2 ( IL-2 ) promoter consists of several independent T cell receptor ( TcR ) responsive elements .
 protein: TcR; protein: IL-2; protein: T cell receptor; DNA: T cell receptor ( TcR ) responsive elements; protein: interleukin-2; DNA: interleukin-2 ( IL-2 ) promoter
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: TcR, IL-2, T cell receptor, T cell receptor ( TcR ) responsive elements, interleukin-2, interleukin-2 ( IL-2 ) promoter 
Answer:
 protein: TcR; protein: IL-2; protein: T cell receptor; DNA: T cell receptor ( TcR ) responsive elements; protein: interleukin-2; DNA: interleukin-2 ( IL-2 ) promoter