23043
These powders were endotracheally insufflated in vivo at a single dose of 0 . 5mg / kg for pharmacokinetic profile ( lung and plasma concentration ) determination in ICR CD - 1 mice .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None