3820
Under barbiturate anesthesia , virtually all of the myocardial contractile indices were depressed significantly in barium - exposed rats relative to the corresponding control - fed rats .
 Chemical: barbiturate; Chemical: barium
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: barbiturate; Chemical: barium