To characterise the ferret transcriptome, samples were derived from ferret lung epithelial (FRL) cells cultured for 24 h in the presence or absence of recombinant ferret IFN‐α, as well as nasal turbinates isolated from ferrets 6 or 24 h post‐infection (hpi) after intranasal infection with PBS (mock) or IAV strain A/Perth/269/2009 (Perth/09, H1N1pdm09) (Figure 1A). Here, IFNA1 is linked to infection.