1051
OBJECTIVES : The present study investigates the effects of nicotine on anxiety induced by caffeine and another anxiogenic drug , pentylenetetrazole , in mice .
 Chemical: nicotine; Disease: anxiety; 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; Disease: anxiety; Chemical: caffeine; Chemical: pentylenetetrazole