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In addition, the level of jun protein was elevated by 2 to 5-fold within 4 h in HU treated cells .
 cell line: HU treated cells; protein: jun 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:
 cell line: HU treated cells; protein: jun protein