14561
Dexamethasone treatment of a human leukemic cell clone CEM C7 caused an increase in a subset of cells expressing the surface antigen CD8 , which is present on suppressor and cytotoxic T-lymphocytes .
 ( protein: surface antigen CD8, None) , ( cell type: cytotoxic T-lymphocytes, None) , ( cell line: human leukemic cell clone CEM C7, 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:
 ( protein: surface antigen CD8, None) , ( cell type: cytotoxic T-lymphocytes, None) , ( cell line: human leukemic cell clone CEM C7, None) 