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These results demonstrate that there are detectable Ad 2/5 E1a sequences in the respiratory epithelium of a small percentage of normals and individuals with CF .
 Ad 2/5 E1a sequences, E1a sequences
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 Ad 2/5 E1a sequences, E1a sequences