1056
RESULTS : Nicotine ( 0 . 05 - 0 . 25 mg / kg ) itself did not produce any significant effect in the EPM test , whereas caffeine ( 70 mg / kg ) and pentylenetetrazole ( 30 mg / kg ) produced an anxiogenic effect , apparent with decreases in open - arm time and entry .
 Chemical: Nicotine; Chemical: caffeine; Chemical: pentylenetetrazole
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: caffeine; Chemical: pentylenetetrazole