3886
Furthermore , a sigmoidal relationship of P ( app ) vs . f ( a ) was obtained when permeability data from the present study were merged with data from 2 other independent laboratories ( R ( 2 ) : 0 . 83 , p < 0 . 01 ) .
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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:
 None