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The term " antibacterial " derives from Greek ἀντί ( " anti " ) , " against " + βακτήριον ( " baktērion " ) , diminutive of βακτηρία ( " baktēria " ) , " staff , cane " , because the first bacteria to be discovered were rod-shaped .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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