2888
In unanesthetized , spontaneously hypertensive rats the decrease in blood pressure and heart rate produced by intravenous clonidine , 5 to 20 micrograms / kg , was inhibited or reversed by nalozone , 0 . 2 to 2 mg / kg .
 hypertensive, clonidine, nalozone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 hypertensive, clonidine, nalozone