23287
RESULTS : The present investigation showed a relationship between behavioral cocaine sensitization , reduced threshold to generate long - term potentiation ( LTP ) in hippocampal dentate gyrus , and increased nNOS activity in this structure .
 Chemical: cocaine
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: cocaine