8697
We found that WEV alone and WEV + NP decreased the viability of all cell types tested ( PCa cells isolated from patient samples , PC3 cells and LNCaP cells ) using an MTT assay .
 Chemical: MTT
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: MTT 
Answer:
 Chemical: MTT