2753
Such an induced muscular rigidity by the narcotic agent was significantly antagonized or even reduced by prior electrolytic lesions of the locus coeruleus or pretreatment with the alpha - adrenoceptor blocker , prazosin .
 Disease: muscular rigidity; Chemical: prazosin
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:
 Disease: muscular rigidity; Chemical: prazosin