Benfield, C. T. O., Lyall, J. W., Kochs, G., & Tiley, L. S. Asparagine 631 variants of the chicken Mx protein do not inhibit influenza replication in primary chicken embryo fibroblasts or in vitro surrogate assays. JOURNAL OF VIROLOGY, 82(15), 7533-7539. https://doi.org/10.1128/JVI.00185-08