13845
Recombinant heavy meromyosin - and subfragment - 1 ( S1 ) - like constructs for both myosin - 18A alpha and - 18 beta species were purified from the baculovirus / Sf9 cell expression system .
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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:
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