(A-C) BMDMs were generated from Cd300lf-/- and Cd300lf+/- littermate controls. (A) BMDMs were challenged with MNoVCW3 (MOI = 0.05) and viral replication was measured by plaque assay 24 hpi. (B) Cd300lf+/- and Cd300lf-/- BMDMs were challenged with MNoVCW3 (MOI = 5) and expression of the MNoV non-structural protein NS1/2 was measured by flow cytometry. (C) Quantification of NS1/2 expression. (D-E) Cd300lf+/- and Cd300lf-/- littermates were challenged with 106 PFU PO MNoVCW3. 24 hpi, virus was measured by both (D) plaque assay and (E) qPCR in the MLN, spleen, distal ileum, and proximal colon. Data was analyzed by Mann-Whitney test. Shown are means ± SEM. NS, not significant; *P<0.05; **P<0.01; ***P<0.001; L.O.D., limit of detection. Experiments in (A-C) where performed at least two independent times each in triplicate. Data in (D-E) are pooled from two independent experiments with at least three mice per group.