NDUFA2 and infection: Antibody titration experiments in the β6-expressing CMT-93 or B16-mβ6 cells showed that the anti-β6 antibody (but not the anti-β8 antibody) strongly reduced infection by M1- and M3-IX-G and H5-ΔE3B-CG-FK-M1 and -FK-M3 viruses (MOI 1 or 3), yielding IC50 values in the range of 95 to 551 ng/ml (Figs 6B, S8A and S8B and Table 2).