26783
Polyethylene glycol ( PEG ) and dextran ( DEX ) are used as phase - forming polymers for the ATPS .
 Chemical: Polyethylene glycol; Chemical: PEG
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: Polyethylene glycol; Chemical: PEG