AXL and infection: R428 treatment inhibited SFTSV infection dose-dependently (Fig. 4B; Fig. S2A), and AXL-ΔCT expressing HEK293 cells (HEK293AXL-ΔCT) showed significantly lower infection rates compared to full-length AXL-expressing cells (HEK293AXL) (Fig. 4C; Fig. S2B).