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The increased sensitivity of CEM-C7 cells and its subclones to dexamethasone in serum-free medium returned to previous levels when these cells were recultured in serum-containing medium .
 cell line: CEM-C7; cell line: CEM-C7 cells
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: CEM-C7; cell line: CEM-C7 cells