21952
A very clear level C in vitro in vivo correlation ( r ( 2 ) = 0 . 98 ) was obtained between the observed in vitro permeabilities and the bioavailability observed in vivo , suggesting that the two in vitro models have good predictive power for drug delivery , which could be a useful tool for future formulation developments intended for buccal delivery .
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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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