10689
In order to address this liability , significant emphasis has been directed at evaluating adjuvants and delivery systems that confer more robust potentiation of the anti - nicotine immune response .
 Chemical: nicotine
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: nicotine