3660
Furthermore , selective destruction of the spinal 5 - HT nerves , produced by bilateral spinal injection of 5 , 7 - dihydroxytryptamine , reduced the magnitude of the vasodepressor or the bradycardiac responses to clonidine microinjected into the area near the ventrolateral surface of the medulla oblongata in rats .
 Chemical: 5 - HT; Chemical: 5 , 7 - dihydroxytryptamine; Disease: bradycardiac; Chemical: clonidine
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: 5 - HT; Chemical: 5 , 7 - dihydroxytryptamine; Disease: bradycardiac; Chemical: clonidine