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A strong repressor element , termed nuclear inhibitory protein ( NIP ), was previously mapped to a segment of the IL-3 promoter between nucleotides -271 and -250 .
 DNA: nucleotides -271 and -250; protein: NIP; DNA: IL-3 promoter; protein: repressor element; protein: nuclear inhibitory protein
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: nucleotides -271 and -250; protein: NIP; DNA: IL-3 promoter; protein: repressor element; protein: nuclear inhibitory protein