619
After determining the bupivacaine AD50 ( the concentration of bupivacaine that caused 50 % of all beating rat heart myocyte cultures to become arrhythmic ) , we determined the effect of 1 - hour progesterone HCl exposure on myocyte contractile rhythm .
 Chemical: bupivacaine; Chemical: bupivacaine; Disease: arrhythmic; Chemical: progesterone; Chemical: HCl
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: bupivacaine; Chemical: bupivacaine; Disease: arrhythmic; Chemical: progesterone; Chemical: HCl