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We have now identified , after 21 serial undiluted passages of MHV , a small DI RNA , DIssF , which is efficiently packaged into virions .
 GENE: small DI RNA; GENE: DIssF
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: small DI RNA; GENE: DIssF