21533
In this study , 30 compounds were synthesized and evaluated for their antiproliferative activity against three tumor cell lines in vitro : A875 , H460 and Hela cancer cells by the 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