10241
The metal ion - driven DNAzyme release of substrates from the pores of MP - SiO ( 2 ) , and particularly the allosteric activation of the DNAzymes through cooperative aptamer - substrate complexes or metal - ion bridges , has important future nanomedical implications for targeted release of drugs .
 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 )