1428
Microinjection of ritanserin into the CA1 region of hippocampus improves scopolamine - induced amnesia in adult male rats .
 Chemical: ritanserin; Chemical: scopolamine; Disease: amnesia
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: ritanserin; Chemical: scopolamine; Disease: amnesia