5163
A single - dose of AFB ( 1 ) increased serum AFB - Lys levels rapidly peaking at 4h , followed by first - order elimination , through which the half - life was estimated to be 2 . 31 days .
 Chemical: AFB ( 1 ); Chemical: AFB; Chemical: Lys
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: AFB ( 1 ), AFB, Lys 
Answer:
 Chemical: AFB ( 1 ); Chemical: AFB; Chemical: Lys