4494
The addition of propargylglycine , a specific cystathionine gamma - lyase inhibitor , and buthionine sulfoximine , a specific gamma - glutamylcysteine ligase inhibitor , to TAMR - MCF - 7 cells , but not to MCF - 7 cells , resulted in cytotoxicity after sulfur amino acid deprivation .
 Chemical: propargylglycine; Chemical: cystathionine; Chemical: buthionine sulfoximine; Chemical: gamma - glutamylcysteine; Chemical: sulfur; Chemical: amino acid
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: propargylglycine; Chemical: cystathionine; Chemical: buthionine sulfoximine; Chemical: gamma - glutamylcysteine; Chemical: sulfur; Chemical: amino acid