passages.id: split_8_test_3096_passage
passages.type: progene_text
passages.text: Co - culture was initiated 2 - 6 or 48 h after maturation corresponding to " semi - mature " actively IL-12 - secreting type 1 DC ( sm-DC1 ) or a " fully mature " DC1 that had lost the ability to release IL-12 ( fm-DC1 ) , respectively .