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Among these target genes is the gene encoding interleukin-2 ( IL2 ), a cytokine facilitating progression through the G1 phase of the cell cycle .
 protein: cytokine; DNA: target genes; protein: IL2; protein: interleukin-2
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: cytokine, target genes, IL2, interleukin-2 
Answer:
 protein: cytokine; DNA: target genes; protein: IL2; protein: interleukin-2