5165
Repeated AFB ( 1 ) exposure at 5 - 25 mu g / kg body weight linearly increased serum AFB - Lys levels for 5 weeks in animals , resulting in a 1 - 1 . 5 times higher AFB - Lys level overall .
 AFB ( 1 ), AFB, Lys, AFB, Lys
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 AFB ( 1 ), AFB, Lys, AFB, Lys