457
Mo + SV M - MuLV - inoculated animals became moribund at 3 to 13 months postinoculation , whereas delta Mo + SV M - MuLV - inoculated animals became moribund at 6 to 24 months postinoculation .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None