20546
Monitoring abacavir bioactivation in humans : Screening for an aldehyde metabolite .
 Chemical: abacavir; Chemical: aldehyde
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: abacavir, aldehyde 
Answer:
 Chemical: abacavir; Chemical: aldehyde