16819
We investigated uptake and individual endosome lysis events in fibroblast , normal , and carcinoma cell lines using a colloidal mesoporous silica ( CMS ) nanoparticle ( NP ) - based reporter system with a covalently attached photosensitizer .
 Chemical: silica
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: silica 
Answer:
 Chemical: silica