7939
Treatment of human umbilical vein endothelial cell ( HUVEC ) monolayers for 6 hours with 0.2 mmol/L diamide and 1 mmol/L buthionine sulfoximine ( BSO ) decreased GSH levels and increased the ratio of GSSG to GSH without cell toxicity .
 ( cell line: HUVEC, None) , ( cell line: human umbilical vein endothelial cell, None) , ( cell line: human umbilical vein endothelial cell ( HUVEC ) monolayers, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell line: HUVEC, None) , ( cell line: human umbilical vein endothelial cell, None) , ( cell line: human umbilical vein endothelial cell ( HUVEC ) monolayers, None) 