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The binding protein (s) that recognize the P sequence of the IL-4 gene were identified by DNA-mobility-shift assays .
 protein: binding protein; DNA: P sequence; DNA: IL-4 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:
 protein: binding protein; DNA: P sequence; DNA: IL-4 gene