SLC35A1 and infection: To assess whether the observed non-overlapping functions of SLC35A1 and SLC35A2 were maintained during infection with other paramyxoviruses, we infected single and double KO A549 cells with the Respirovirus rSeVCeGFP, the Avulavirus rNDVeGFP, or the Rubulavirus MuV at an MOI of 1.5 and looked for either eGFP (SeV and NDV) or MuV NP expression at 24 hpi.