Fig. 2

Volcano plots show differentially expressed lncRNAs in a GSWW versus Mock comparison group and in b VR2332 vs. Mock comparison group. c Hierarchical heat map demonstrating transformed expression values (log2 FPKM) for 15 differentially expressed lncRNAs. Red shows up-regulation and green shows down-regulation. d RT-qPCR results of differentially expressed genes after PRRSV infection by GSWW and VR2332 at 24 hpi in PAMs. Total RNA was extracted, and the first-strand cDNA was synthesized using reverse transcriptase kit. The bar represents the mean of three samples. Expression levels were normalized to GAPDH