15333
Our results suggest that P - gp - mediated transport across the BBB does not play a key - role in gender and strain - related variability in BUP and NBUP - induced respiratory toxicity in mice .
 Chemical: BUP; Chemical: NBUP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: BUP; Chemical: NBUP