passages.id: split_8_test_489_passage
passages.type: progene_text
passages.text: Interestingly , human cord blood cell engraftment in RAG2 - / - / gamma c - mice was greatly enhanced by the exogenous administration of human cytokines interleukin-(IL-3 ) granulocyte - macrophage colony - stimulating factor , ( GM-CSF ) , and erythropoietin in contrast to the NOD / SCID model .