Table 4. PNS characteristics to the Pestivirus CSFV species with related genotypes and genotype variants. The position of base pairings is defined by numbering from the bottom of the variable locus. Y= C or U.

CSFV species	Locus	Characteristic PNS markers
	V1	U-A in position 13 (exception U*G or C-G; C A bulge);
	V3	U-A in position 2; C A or U-A in position 7; U or C in position 8 (exception A).
CSFV genotypes	Locus	Characteristic PNS markers
CSFV-a	V1	A C bulge in position 15 (exceptions G:Y and A-U);
	V2	U-A in position 5; G:Y in position 7;
	V3	A-U in position 1 (exception A G bulge).
CSFV-b	V1	G:Y in position 15; A G bulge in position 19; U-A in position 20;
	V2	A-U in position 5; A C bulge in position 7;
	V3	A-U in position 1; U C bulge in position 6.
CSFV-c	V1	A-U in position 15;
	V2	U-A in position 5; G:Y in position 7;
	V3	A G bulge in position 1.
CSFV-d	V1	A C bulge in position 15;
	V2	U-A in position 5; G:Y in position 7;
	V3	U U bulge in position 1.
CSFV genotype variants	Locus	Characteristic PNS markers
CSFV-a1	V1	AC in position 15;
	V2	A-U in position 1; A-U in position 6;
	V3	C or U in position 8.
CSFV-a2	V1	AC in position 15 (exception G-C);
	V2	A-U in position 1; G:Y in position 6;
	V3	A-U in position 6; U or C in position 8.
CSFV-a3	V1	AC in position 15;
	V2	AC in position 1; G:Y in position 6;
	V3	A in position 8.
CSFV-a4	V1	G:Y in position 15;
	V2	A-U in position 1; G:Y in position 6;
	V3	AC or UC in position 6; A in position 8 (exception C).
CSFV-a5	V1	A-U in position 15;
	V2	AC in position 1; A-U in position 6;
	V3	U in position 8.
CSFV-a6	V1	G:Y in position 15;
	V2	A-U in position 1; A-U in position 6;
	V3	C in position 8.