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The antimicrobial activity of pomegranate juice was dependent on the test organism , which varied to highly susceptible ( four Gram - positive species ) to unaffected ( Salmonella and Escherichia coli O157 : H7 ) .
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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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