3151
AIM : To study the effects of testosterone on streptozotocin ( STZ ) - induced memory impairment in male rats .
 Chemical: testosterone; Chemical: streptozotocin; Chemical: STZ; Disease: memory impairment
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: testosterone; Chemical: streptozotocin; Chemical: STZ; Disease: memory impairment