17836
Our findings suggest an important role for the alpha 3 beta 4 * nAChR subtype in nicotine reward and physical aspects of the nicotine withdrawal syndrome .
 Chemical: nicotine; 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; Chemical: nicotine