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Following treatment of the rats with a single oral dose of IQ or PhIP , the highest mutagenic activity determined in the presence of an activation system was excreted in the urine after 24 h , with much lower levels of mutagencity being excreted during subsequent elimination from the body .
 Chemical: PhIP
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: PhIP