8177
Amide conjugation showed higher haptenation ratios and greater efficacy than thioether conjugation to maleimide activated KLH ( mKLH ) .
 Chemical: Amide; Chemical: thioether; Chemical: maleimide
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: Amide; Chemical: thioether; Chemical: maleimide