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Ad5 E1A DNA was detected by polymerase chain reaction in five of six animals 20 days after infection and in five of five animals 47 days after infection.
 DNA: Ad5 E1A 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: Ad5 E1A DNA 
Answer:
 DNA: Ad5 E1A DNA