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The P sequence does not share homology with the 5' upstream sequence of the IL-2 gene , even though surrounding sequences of the IL-4 gene share high homology with the IL-2 gene .
 DNA: IL-2 gene; DNA: P sequence; DNA: 5' upstream sequence; DNA: IL-4 gene; DNA: IL-2 gene
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: IL-2 gene; DNA: P sequence; DNA: 5' upstream sequence; DNA: IL-4 gene; DNA: IL-2 gene