3656
The effects of microinjection of clonidine ( 1 - 10 micrograms in 1 microliter ) into a region adjacent to the ventrolateral surface of the medulla oblongata on cardiovascular function were assessed in urethane - anesthetized rats .
 Chemical: clonidine; 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: clonidine; Chemical: urethane