7949
In the present study, we have investigated the effect of glucocorticoid hormones on neutrophil -mediated tumor cell cytostasis and found that hydrocortisone and a synthetic hormone , dexamethasone ( Dex ), inhibited cytostasis in the presence or absence of tumor necrosis factor-alpha .
 ( cell type: neutrophil, None) , ( protein: tumor necrosis factor-alpha, 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 type: neutrophil, None) , ( protein: tumor necrosis factor-alpha, None) 