4652
These findings suggest that the mechanism of ribosomal frameshifting at the PVM signal is different from the one described by the ' simultaneous slippage ' model in that only the string of four adenosine nucleotides represents the slippery sequence involved in a - 1 P - site slippage .
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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:
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