18120
Poly ( amidoamine ) ( PAMAM ) dendrimers have been evaluated for the influence of surface functionality and size on the epithelial barrier of the gut with the goal of identifying safe carriers that can be used for oral drug delivery .
 Chemical: Poly ( amidoamine ); Chemical: PAMAM
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: Poly ( amidoamine ); Chemical: PAMAM