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One experiment was carried out using 3 male calves to test the toxicity of a single dose of S . versicolor leaves at 15 g / kg , 5 g / kg and 2 . 5 g / kg .
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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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