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PLGA nanoparticles are among the most studied polymer nanoformulations for several drugs against different kinds of malignant diseases , thanks to their in vivo stability and tumor localization exploiting the well - documented " enhanced permeation and retention " ( EPR ) effect .
 Chemical: PLGA
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: PLGA