14206
3 - ( 4 , 5 - Dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide ( MTT ) assay was used to evaluate carrier cytotoxicity .
 Chemical: 3 - ( 4 , 5 - Dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide; Chemical: MTT
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: 3 - ( 4 , 5 - Dimethylthiazol - 2 - yl ) - 2 , 5 - diphenyltetrazolium bromide; Chemical: MTT