10236
In the presence of Mg ( 2 + ) or Zn ( 2 + ) ions the respective DNAzymes are activated , leading to the specific cleavage of the respective caps , and the selective release of MB ( + ) or Th ( + ) .
 Chemical: Mg ( 2 + ); Chemical: Zn ( 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: Mg ( 2 + ); Chemical: Zn ( 2 + )