15321
Gender and strain contributions to the variability of buprenorphine - related respiratory toxicity in mice .
 Chemical: buprenorphine
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: buprenorphine 
Answer:
 Chemical: buprenorphine