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Second, in contrast to recent results on human cell lines , CIITA is not critically involved in the IFN-gamma -induced up-regulation of MHC class I genes .
 cell line: human cell lines; protein: CIITA; protein: IFN-gamma; DNA: MHC class I genes
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 cell lines, CIITA, IFN-gamma, MHC class I genes 
Answer:
 cell line: human cell lines; protein: CIITA; protein: IFN-gamma; DNA: MHC class I genes