16691
In this study , using recombinant human insulin ( insulin ) as a model , we investigated the ability of several excipients , in particular triethylenetetramine ( TETA ) , reduced glutathione ( GSH ) and ethylenediamine tetraacetic acid ( EDTA ) , for their ability to prevent protein oxidation , aggregation , and fragmentation .
 Chemical: triethylenetetramine; Chemical: TETA; Chemical: reduced glutathione; Chemical: GSH; Chemical: ethylenediamine tetraacetic acid; Chemical: EDTA
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: triethylenetetramine; Chemical: TETA; Chemical: reduced glutathione; Chemical: GSH; Chemical: ethylenediamine tetraacetic acid; Chemical: EDTA