3556
In a series of five experiments , the modulating role of naloxone on a scopolamine - induced retention deficit in a passive avoidance paradigm was investigated in mice .
 Chemical: naloxone; Chemical: scopolamine; Disease: retention deficit
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: naloxone; Chemical: scopolamine; Disease: retention deficit