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Ribavirin , a guanosine analogue , has broad antiviral activity against both RNA and DNA viruses , including documented activity against adenovirus in vitro .
 Chemical: Ribavirin; Chemical: guanosine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Ribavirin; Chemical: guanosine