10975
In contrast, semiquantitative RT-PCR analysis of RNA from reticulocytes of the same chimeric animals suggested that the ES cell-derived reticulocytes were present at a level of 6% to 8%.
 ( cell type: reticulocytes, None) , ( cell type: reticulocytes, None) , ( cell type: ES cell-derived reticulocytes, 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: reticulocytes, None) , ( cell type: reticulocytes, None) , ( cell type: ES cell-derived reticulocytes, None) 