11084
Within the erythroid lineage , runt expression is biphasic, clearly present in the erythroblasts of early blood islands and of the fetal liver , but absent in the adult.
 ( cell type: erythroblasts, None) , ( cell type: erythroid lineage, 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: erythroblasts, None) , ( cell type: erythroid lineage, None) 