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The binding of NF(P) (a DNA binding protein that specifically recognizes the P sequence ) to the P sequence was abolished when oligonucleotides carrying base substitutions were used, indicating that the NF(P) interaction is sequence-specific and that binding specificity of the protein paralleled the sequence requirements for IL-4 expression in vivo.
 DNA: P sequence; DNA: P sequence; protein: IL-4; protein: NF(P); protein: DNA binding protein; protein: NF(P)
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: P sequence; DNA: P sequence; protein: IL-4; protein: NF(P); protein: DNA binding protein; protein: NF(P)