838
Thirty - one age - matched , conscious , virgin , male Sprague - Dawley rats and spontaneously hypertensive rats ( SHRs ) were individually injected with a single subcutaneous dose of 85 mg / kg dl - isoproterenol to determine the degree and time course of drug - induced cardiac failure and functional recovery .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None