20580
Capping agents , surface facets , and sample stability - the three experimental parameters that are inherent from the wet - chemical synthesis of Ag nanoparticles - have a strong impact on toxicity evaluation .
 Chemical: Ag
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: Ag