As recently reported, SAEC and the immortalized human alveolar epithelial cell line A549 showed similar levels of productive rLCMV/LASVGP infection [80], which correlated with similar expression patterns of functional glycosylated DG and the alternative receptors Axl RTK and T cell immunoglobulin and mucin domain (TIM)-1 [27,37,80]. Here, AXL is linked to infection.