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Transfection of EL-4 cells with the IL-4 promoter-reporter constructs carrying mutated P -like elements showed that four P-like elements , CLE0 , P , P2 and P4 , but not P3 , were required for optimal activation of the IL-4 promoter .
 DNA: P; DNA: IL-4 promoter; DNA: mutated P -like elements; DNA: CLE0; DNA: P3; cell line: EL-4 cells; DNA: IL-4 promoter-reporter constructs; DNA: P2; DNA: P; DNA: P-like elements; DNA: P4
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: P, IL-4 promoter, mutated P -like elements, CLE0, P3, EL-4 cells, IL-4 promoter-reporter constructs, P2, P, P-like elements, P4 
Answer:
 DNA: P; DNA: IL-4 promoter; DNA: mutated P -like elements; DNA: CLE0; DNA: P3; cell line: EL-4 cells; DNA: IL-4 promoter-reporter constructs; DNA: P2; DNA: P; DNA: P-like elements; DNA: P4