5251
Premetamorphic ( Gosner stage 26 - 28 ) tadpoles were immersed for 21 days in solvent control , 1 . 5 mu g / L thyroxine ( T ( 4 ) ) , 0 . 3 , 3 and 30 mu g / L ( nominal ) TCS , or combined T ( 4 ) / TCS treatments .
 Chemical: thyroxine; Chemical: TCS; Chemical: TCS
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: thyroxine; Chemical: TCS; Chemical: TCS