2872
This compound also produced a dose - dependent decrease in the expression of apoptotic proteins ( cleaved PARP and caspase - 3 ) induced by l - buthionine - ( S , R ) - sulfoximine ( BSO ) plus glutamate and stimulated glutathione and glutathione S - transferase activity .
 Chemical: l - buthionine - ( S , R ) - sulfoximine; Chemical: BSO; Chemical: glutamate; Chemical: glutathione; Chemical: glutathione; Chemical: S
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: l - buthionine - ( S , R ) - sulfoximine, BSO, glutamate, glutathione, glutathione, S 
Answer:
 Chemical: l - buthionine - ( S , R ) - sulfoximine; Chemical: BSO; Chemical: glutamate; Chemical: glutathione; Chemical: glutathione; Chemical: S