4405
Left atrial and left ventricular papillary muscle contractile responses to isoproterenol were reduced compared to controls in groups treated with clentiazem alone , but combined with epinephrine , clentiazem restored left atrial responses and enhanced left ventricular papillary responses to isoproterenol .
 Chemical: isoproterenol; Chemical: clentiazem; Chemical: epinephrine; Chemical: clentiazem; Chemical: isoproterenol
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: isoproterenol; Chemical: clentiazem; Chemical: epinephrine; Chemical: clentiazem; Chemical: isoproterenol