15756
Methods : The stability of six acyl glucuronides in the presence of hCES1 , hCES2 , and buffer alone ( 100 mM potassium phosphate , pH 7 . 4 , 37 degrees C ) were investigated .
 Chemical: acyl glucuronides; Chemical: potassium phosphate
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: acyl glucuronides; Chemical: potassium phosphate