7274
It is concluded that this novel culture system, coupled with single-cell RT-PCR analysis, may eliminate the ambiguities intrinsic to molecular studies on heterogeneous populations of hematopoietic progenitors /precursors growing in culture, particularly in the initial stages of development.
 ( cell type: hematopoietic progenitors, None) , ( cell type: hematopoietic progenitors /precursors, 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: hematopoietic progenitors, None) , ( cell type: hematopoietic progenitors /precursors, None) 