20997
Glutathione - S - transferase , a phase II enzyme , was inhibited by both arsenic and nicotine but no such inhibition was noted in arsenic - treated animals pre - exposed to nicotine .
 Chemical: Glutathione; Chemical: S; Chemical: arsenic; Chemical: nicotine; Chemical: arsenic; Chemical: nicotine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Glutathione; Chemical: S; Chemical: arsenic; Chemical: nicotine; Chemical: arsenic; Chemical: nicotine