passages.id: split_8_test_1549_passage
passages.type: progene_text
passages.text: In this study , we found that DCs derived from human blood monocytes , upon culture in the presence of IFN-beta with granulocyte - macrophage colony - stimulating factor ( GM-CSF ) and IL-4 , differentiated into a population expressing CD14 - CD1a - HLA-DR + .