Table 1.

Primer sequences used in this study.

Gene	Sequence (5′-3′) Forward	Sequence (5′-3′) Reverse	Accession No. a
TLR4	CTCTGCCTTCACTACAGAGA	CTGAGTCGTCTCCAGAAGAT	AB078418
TLR9	GTGGAACTGTTTTGGCATC	CACAGCACTCTGAGCTTTGT	AB071394
TGF-β	CACGTGGAGCTATACCAGAA	TCCGGTGACATCAAAGGACA	Y00111
TNF-α	ATTCAGGGATGTGTGGCCTG	CCAGATGTCCCAGGTTGCAT	JF831365.1
β-actin	CATCACCATCGGCAACGA	GCGTAGAGGTCCTTCCTGATGT	U07786
PEDV-M	GGTTCTATTCCCGTTGATGAGGT	AACACAAGAGGCCAAAGTATCCAT	AF353511.1

^a The sequences of the two primers were checked using NCBI BLAST Software (NCBI, Bethesda, MD, USA), and no significant alignment with any other animal virus gene was found.