17965
Overnight abstinent smokers received saline followed by 0 . 5 and 1 . 0 mg per 70 kg doses of nicotine , administered 30 min apart .
 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