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To test this hypothesis, a more sensitive and specific polymerase chain reaction ( PCR ) assay was developed to detect adenovirus DNA .
 DNA: adenovirus DNA
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: adenovirus DNA 
Answer:
 DNA: adenovirus DNA