24340
An in vitro approach was used for investigating the toxicological effects of these mixtures and their corresponding individual compounds , using a panel of cellular models , i . e . primary rat and human hepatocytes , liver , intestine , kidney , colon and brain human cell lines .
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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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