Table 2.

PRRSV strains used in this study.

No.	Name	GenBank accession no.	Origin	No.	Name	GenBank accession no.	Origin
1	FJWQ16	KX758249	China	21	10-10-GX-3	JQ663560	China
2	FJZ03	KP860909	China	22	Em2007	EU262603	China
3	FJYR	KT804696	China	23	FJ1402	KX169191	China
4	11FS11-GD	JX215551	China	24	QYYZ	JQ308798	China
5	TJ	EU860248	China	25	JX143	EU708726	China
6	CH-1a	AY032626	China	26	10-10BJ-2	JX192635	China
7	JA142	AY424271	China	27	10-10FUJ-3	JQ663548	China
8	VR-2332	U87392	China	28	BJ-4	AF331831	China
9	JXA1-Ra	R FJ548855	China	29	MN184A	DQ176019	U.S.A.
10	JXA1	EF112445	China	30	MN184B	DQ176020	U.S.A.
11	JXA1 P100b	KC422725	China	31	HENNAN-XINX	KF611905	China
12	JXA1 P70b	FJ548852	China	32	NADC30	JN654459	U.S.A.
13	JXA1 P45b	FJ548851	China	33	JL580	KR706343	China
14	JXA1 P15b	FJ548855	China	34	CHsx1401	KP861625	China
15	HB-1(sh)/2002	AY150312	China	35	HNjz15	KT945018	China
16	HB-2(sh)/2002	AY262352	China	36	HNyc15	KT945018	China
17	HUN4	EF635006	China	37	HLJA1	KT351739	China
18	NT1c	KP179402	China	38	RespPRRS MLV	AF066183	U.S.A
19.	NT2c	KP179403	China	39	GZgy15-1	KT358728	China
20	NT3c	KP179404	China	40	GD	EU825724	China

^aLive attenuated vaccine strain of HP-PRRSV JXA1.

^bDerivatives of in vitro passaged HP-PRRSV JXA1 in MARC-145 cells.

^cVirulence reversion from live attenuated PRRS vaccine JXA1-R.