10117
The aim of this study is to examine how different specific surface areas of similar - sized titanium dioxide ( TiO ( 2 ) ) particles could influence both cytotoxicity and phototoxicity .
 Chemical: titanium dioxide; Chemical: TiO ( 2 )
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: titanium dioxide; Chemical: TiO ( 2 )