24320
The organic extract of Elephantorrhiza elephantina , a plant reportedly used to treat acne vulgaris , demonstrated noteworthy antimicrobial activity ( MIC value of 0 . 05mg / ml ) against Propionibacterium acnes .
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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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