13901
Eight constituents possessing the high absolute mean impact value were identified to have significant cytotoxicity , and the cytotoxic effect of these constituents was partly confirmed by subsequent MTT ( 3 - ( 4 , 5 - dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide ) assays and previous reports .
 Chemical: MTT; Chemical: 3 - ( 4 , 5 - dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide
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, 3 - ( 4 , 5 - dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide 
Answer:
 Chemical: MTT; Chemical: 3 - ( 4 , 5 - dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide