23530
Saline or nicotine ( 7 . 8 mg / kg / day ; free - base weight ) were administered to male CD1 mice via subcutaneous osmotic minipumps for a period of 14 days .
 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