20280
These include the relationships between ketamine - induced neurotoxicity / protection and the preclinical models / approaches in elucidating mechanisms associated with ketamine exposure .
 Chemical: ketamine; Chemical: ketamine
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: ketamine; Chemical: ketamine