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The results indicate that the glutathione conjugates of BPDE are formed and excreted mainly to the apical and to a minor extent to the basolateral side of polarized Caco - 2 monolayers .
 Chemical: glutathione; Chemical: BPDE
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: glutathione; Chemical: BPDE