MX1 and lung carcinoma: In this group, three studies used A549 cells (human lung carcinoma); two used novel HEK-Blue IFN-α/β and/or donor PBMCs; one used Hil3 (hepatoma cell line); one used U937 cells stably expressing an Mx1 promoter; one used U937-Mx1-Luc (containing luciferase reporter construct) and one used Fibroblast cells (FL).