5855
Clusters of genes expressed by stromal cells and lymphocytes in the breast tumors also were identified in this analysis.
 ( cell type: stromal cells, None) , ( cell type: lymphocytes, None) , ( DNA: genes, 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: stromal cells, None) , ( cell type: lymphocytes, None) , ( DNA: genes, None) 