6647
With prediction of clearance ( CL ) by allometric scaling , taking in vitro CL ( int ) into consideration improved the accuracy and reduced the average fold error from 2 . 72 to 1 . 99 .
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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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