11659
Co - incubation with silica nanoparticles amplified the responsiveness of macrophages toward the TLR9 ligand ISS 1018 .
 Chemical: silica
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: silica