2900
Both groups receiving 10 micrograms kg - 1 showed increases in heart rate of up to 30 beat min - 1 ( 95 % confidence limits 28 - 32 beat min - 1 ) .
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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:
 None