CX3CL1 and acute promyelocytic leukemia: The aim of this study is to investigate the role of apoptotic ATRA-APL NB4 (ATRA-NB4) cell-derived apo-MP on the phagocytic activity of AM-NR8383 cells in the cell–cell interaction between apoptotic ATRA-NB4 cells and NR8383 cells, this will help us to understand the comprehensive role of CX3CL1(+)apo-MP in the cell–cell interaction between apoptotic APL cells and AM during the resolution phase of acute lung injury in APL patients with DS.