5052
Whole mount in situ hybridization revealed a wide distribution of msh6 mRNA in the head regions of 10 hpf embryos and pretreatment of embryos with antioxidants butylhydroxytoluene ( BHT ) , d - mannitol or N - acetylcysteine ( NAC ) at 1 - 10 mu M restored Cd - suppressed msh6 expression .
 Chemical: butylhydroxytoluene; Chemical: BHT; Chemical: d - mannitol; Chemical: N - acetylcysteine; Chemical: NAC; Chemical: Cd
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: butylhydroxytoluene, BHT, d - mannitol, N - acetylcysteine, NAC, Cd 
Answer:
 Chemical: butylhydroxytoluene; Chemical: BHT; Chemical: d - mannitol; Chemical: N - acetylcysteine; Chemical: NAC; Chemical: Cd