5053
The exocytosis of phosphonate modified mesoporous silica nanoparticles ( P - MSNs ) is demonstrated and lysosomal exocytosis is identified as the mechanism responsible for this event .
 Chemical: phosphonate; 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: phosphonate; Chemical: silica