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To study the expression of IL-16 at the transcriptional level, we cloned the human chromosomal IL-16 gene and analyzed its promoter.
 DNA: human chromosomal IL-16 gene; protein: IL-16; protein: IL-16
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: human chromosomal IL-16 gene, IL-16, IL-16 
Answer:
 DNA: human chromosomal IL-16 gene; protein: IL-16; protein: IL-16