12048
Moreover , activities of caspase - 3 and caspase - 9 enzymes were also significantly higher in both kinds of cells exposed to SiO ( 2 ) NPs .
 Chemical: SiO ( 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: SiO ( 2 )