151
Isoproterenol pretreatment for 15 days caused cardiac hypertrophy without affecting baseline blood pressure and heart rate .
 Isoproterenol, cardiac hypertrophy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Isoproterenol, cardiac hypertrophy