BTG3 and infection: To investigate whether α2,3- and α2,6-linked SAs mediate EV-D68 infection on hiPSC-derived 2D myotubes, we removed cell surface SAs with Arthrobacter ureafaciens neuraminidase (ANA) before inoculation with EV-D68/A1 or EV-D68/A2 at MOI 0.1.