1509
CD3 -epsilon expression is controlled by a downstream T lymphocyte-specific enhancer element .
 DNA: downstream T lymphocyte-specific enhancer element; protein: CD3
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 DNA: downstream T lymphocyte-specific enhancer element; protein: CD3