Table 2.

Primers for quantitative real-time PCR.

Name	Sequence
N a	F: 5′-ATCGACCACATGGCTCCAA-3′
	R: 5′-CAGCTCTTGCCCATGTAGCTT-3′
β-actin	F: 5′-CTCTTCCAGCCCTCCTTCC-3′
	R: 5′-GGTCCTTGCGGATGTCG-3′

Note: a: reference strain, CH/JXNI/02/2015 (GenBank accession number: KR131621.1).