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Cell proliferation of CEM-C7 cells cultured in both serum-free media has been sustained for 3 mo.
 cell line: CEM-C7
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