5160
Physiologically based toxicokinetics of serum aflatoxin B1 - lysine adduct in F344 rats .
 Chemical: aflatoxin B1; Chemical: lysine
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: aflatoxin B1, lysine 
Answer:
 Chemical: aflatoxin B1; Chemical: lysine