2670
In FCS- liquid-suspension culture supplemented with saturating Ep level and low-dose IL-3 /GM-CSF , adult HPC undergo unilineage erythropoietic differentiation : Here again, treatment with high-dose RA induces a shift from the erythroid to granulocytic differentiation pathway .
 HPC, Ep, low-dose IL-3 /GM-CSF, /GM-CSF, IL-3, FCS- liquid-suspension culture
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 HPC, Ep, low-dose IL-3 /GM-CSF, /GM-CSF, IL-3, FCS- liquid-suspension culture