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Infusion of the central nervous system alpha2 - adrenergic receptor agonist clonidine also resulted in a greater reduction in MAP in both groups of SHR that were fed the high ( compared with the basal ) sodium chloride diet .
 Chemical: alpha2 - adrenergic receptor agonist; Chemical: clonidine; Chemical: sodium chloride
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: alpha2 - adrenergic receptor agonist; Chemical: clonidine; Chemical: sodium chloride