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In the present study , we develop by the first time , a unified multitasking model based on quantitative - structure biological effect relationships ( mtk - QSBER ) for the simultaneous prediction of anti - TB activity and toxicity against Mus musculus and Rattus norvegicus .
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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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