18179
3 - ( 4 , 5 - Dimethylthiazol ) - 2 , 5 - diphenyl tetrazolium bromide ( MTT ) assay was used to investigate the reversal index of RA in SGC7901 / Adr cell line .
 Chemical: 3 - ( 4 , 5 - Dimethylthiazol ) - 2 , 5 - diphenyl tetrazolium bromide; Chemical: MTT; Chemical: Adr
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 , 5 - diphenyl tetrazolium bromide; Chemical: MTT; Chemical: Adr