20899
( Soft Matter , 2011 , 7 , 10449 - 10456 ) who reported identical electrokinetic and aggregation characteristics for MS2 and corresponding virus like particles ( VLPs ) that lack the internal RNA component .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None