4541
Together these results demonstrate that T cell expression of IL-3 is not specified by the activity of a single tissue-specific element , but instead involves multiple interacting elements that provide both specific positive regulation in T cells and specific negative regulation in fibroblasts .
 DNA: interacting elements; cell type: T cells; protein: IL-3; cell type: fibroblasts; DNA: tissue-specific 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: interacting elements, T cells, IL-3, fibroblasts, tissue-specific element 
Answer:
 DNA: interacting elements; cell type: T cells; protein: IL-3; cell type: fibroblasts; DNA: tissue-specific element