1597
Absolute bioavailability following gavage administration of 37 mg / kg was low in both rats ( ~ 4 % ) and mice ( 7 - 9 % ) of both sexes indicating extensive first - pass metabolism .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None