22871
The present study was undertaken to evaluate the effect of acetaminophen in human neutrophils ' oxidative burst and lifespan in vitro .
 Chemical: acetaminophen
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: acetaminophen 
Answer:
 Chemical: acetaminophen