4567
In the present study , the possible enhancement by isoniazid of bradycardia induced by beta - adrenoceptor antagonists was determined in rats anaesthetised with chloralose - urethane .
 Chemical: isoniazid; Disease: bradycardia; Chemical: chloralose; Chemical: urethane
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: isoniazid; Disease: bradycardia; Chemical: chloralose; Chemical: urethane