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We investigated various Plu / PAA / Epi formulations for their physicochemical properties and in vitro permeation and accumulation , as well as for in vivo pharmacokinetic and antitumor efficacy .
 Chemical: Plu; Chemical: PAA; Chemical: Epi
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: Plu; Chemical: PAA; Chemical: Epi