4552
Although transcriptional factors AP-1 and nuclear factor of activated T cells ( NF-AT ) are important for the normal induction of IL-2 , it is unknown if the age-related decline in IL-2 production by activated human T cells may be associated with aberrancies in transcriptional regulatory proteins .
 protein: IL-2; protein: NF-AT; protein: AP-1; cell type: human T cells; protein: IL-2; protein: transcriptional factors; protein: transcriptional regulatory proteins
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: IL-2, NF-AT, AP-1, human T cells, IL-2, transcriptional factors, transcriptional regulatory proteins 
Answer:
 protein: IL-2; protein: NF-AT; protein: AP-1; cell type: human T cells; protein: IL-2; protein: transcriptional factors; protein: transcriptional regulatory proteins