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Of these promising targets , beta - ketoacyl - acyl carrier protein ( ACP ) synthase III ( FabH ) is the most attractive target that could trigger the initiation of fatty acid biosynthesis and is highly conserved among Gram - positive and - negative bacteria .
 beta - ketoacyl, acyl, fatty acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 beta - ketoacyl, acyl, fatty acid