25003
It was found that the use of the tripeptide glutathione ( GSH ) results in smaller NP size when compared to N - ( 2 - mercapto - propionyl ) glycine ( MPG ) , a pseudodipeptide , over a wide range of Au / peptide molar ratios ( 20 : 1 , 10 : 1 , 5 : 1 , and 2 : 1 ) .
 Chemical: glutathione; Chemical: GSH; Chemical: N - ( 2 - mercapto - propionyl ) glycine; Chemical: MPG; Chemical: Au
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: glutathione; Chemical: GSH; Chemical: N - ( 2 - mercapto - propionyl ) glycine; Chemical: MPG; Chemical: Au