MERTK and infection: In addition, WT, Axl−/−, and Mer−/− macrophages infected equally, as assessed 3 h after infection with 5 parasite/macrophage ratios (WT: 16 ± 3; Axl−/−: 15 ± 3; Mer−/−: 13 ± 3 parasites/100 macrophages).