ASIC3 and infection: Fig 1A and 1B show expression of both receptors in both cell types. TRPV1 and ASIC3 RT-PCR products were obtained from each cell line and confirmed by DNA sequencing (not shown). BEAS-2B cells and SHSY5Y cells were infected at an MOI of 1 for 24 hours with MV or RSV and stained with anti-viral antibodies confirming infection (Fig 1C and 1D).