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The superoxide scavenger tempol ( 30 , 100 , and 300 micromol kg ( - 1 ) , IV ) did not change arterial pressure in control rats but caused a dose - dependent decrease in LNNA rats ( - 18 + / - 8 , - 26 + / - 15 , and - 54 + / - 11 mm Hg ) .
 Chemical: superoxide; Chemical: tempol; Chemical: LNNA
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: superoxide; Chemical: tempol; Chemical: LNNA