3007
In rats which were pretreated with nicotine for 5 days , there was a significant increase in the nicotine - stimulated locomotor response which was associated with an increase in the number of L - [ 3H ] nicotine binding sites and also with an elevated dopamine ( DA ) level in the striatum .
 Chemical: nicotine; Chemical: nicotine; Chemical: nicotine; Chemical: dopamine; Chemical: DA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: nicotine; Chemical: nicotine; Chemical: nicotine; Chemical: dopamine; Chemical: DA