12582
Dendritic cells and autologous CD4 + T cells were isolated from peripheral blood by a series of density-gradient centrifugations or magnetic bead separations (or both).
 ( cell type: autologous CD4 + T cells, None) , ( cell type: Dendritic cells, None) , ( protein: CD4, 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: autologous CD4 + T cells, None) , ( cell type: Dendritic cells, None) , ( protein: CD4, None) 