9813
Messenger RNA ( mRNA ) levels for the granulocyte-colony stimulating factor ( G-CSF ) receptor , granulocyte-macrophage (GM)-CSF receptor alpha subunit and tumor necrosis factor (TNF) receptors I (p55) and II (p75) were also detected in this subset in addition to c-kit and flt-3 , receptors known to be expressed on progenitor cells .
 ( RNA: mRNA, None) , ( protein: flt-3, None) , ( protein: granulocyte-colony stimulating factor ( G-CSF ) receptor, None) , ( cell type: progenitor cells, None) , ( protein: granulocyte-colony stimulating factor, None) , ( protein: G-CSF, None) , ( protein: granulocyte-macrophage (GM)-CSF receptor alpha subunit, None) , ( protein: c-kit, None) , ( RNA: Messenger RNA, 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:
 ( RNA: mRNA, None) , ( protein: flt-3, None) , ( protein: granulocyte-colony stimulating factor ( G-CSF ) receptor, None) , ( cell type: progenitor cells, None) , ( protein: granulocyte-colony stimulating factor, None) , ( protein: G-CSF, None) , ( protein: granulocyte-macrophage (GM)-CSF receptor alpha subunit, None) , ( protein: c-kit, None) , ( RNA: Messenger RNA, None) 