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The mechanism of overexpression in various tumor cell types and its biological significance in cutaneous carcinogenesis remain to be determined.
 cell type: tumor cell types
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: tumor cell types 
Answer:
 cell type: tumor cell types