12831
In the present research , nanomaterial interaction with DCFH - DA was studied in relation to its nature and / or assay conditions ( cell - based and time exposure ) by incubating Rhodamine ( Rhd ) - labeled 25nm and 50nm silica ( SiO2 ) , naked and oleic acid coated magnetite , ( Fe3O4 ) and maghemite ( Fe2O3 ) iron oxide , titanium dioxide ( TiO2 ) and poly ( ethylene oxide ) - poly ( lactide / glycolide ) acid ( PLGA - PEO ) nanoparticles ( NPs ) with metabolically active rat hepatocytes for 4 and 24 - h periods .
 Chemical: DCFH - DA; Chemical: Rhodamine; Chemical: Rhd; Chemical: silica; Chemical: SiO2; Chemical: oleic acid coated magnetite; Chemical: Fe3O4; Chemical: maghemite; Chemical: Fe2O3; Chemical: iron oxide; Chemical: titanium dioxide; Chemical: TiO2; Chemical: poly ( ethylene oxide ) - poly ( lactide / glycolide ) acid; Chemical: PLGA - PEO
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: DCFH - DA; Chemical: Rhodamine; Chemical: Rhd; Chemical: silica; Chemical: SiO2; Chemical: oleic acid coated magnetite; Chemical: Fe3O4; Chemical: maghemite; Chemical: Fe2O3; Chemical: iron oxide; Chemical: titanium dioxide; Chemical: TiO2; Chemical: poly ( ethylene oxide ) - poly ( lactide / glycolide ) acid; Chemical: PLGA - PEO