10977
Consistent with this hypothesis, the short life span was ameliorated by introduction into the EKLF-/- ES cells of a human LCR/gamma-globin gene , as evidenced by the presence of ES cell-derived reticulocytes as well as mature erythrocytes in the blood of the chimeric animals .
 ( DNA: human LCR/gamma-globin gene, None) , ( cell line: EKLF-/- ES cells, None) , ( cell type: ES cell-derived reticulocytes, None) , ( cell type: reticulocytes, None) , ( cell type: mature erythrocytes, 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:
 ( DNA: human LCR/gamma-globin gene, None) , ( cell line: EKLF-/- ES cells, None) , ( cell type: ES cell-derived reticulocytes, None) , ( cell type: reticulocytes, None) , ( cell type: mature erythrocytes, None) 