Table 2.

The ALV-J reference strains used in this study.

ALV strains	Country	Year	Host	Tumor phenotype	Subgroup	Accession number
RAV-1	USA	1980	Commercial chicken	LL	A	MF926337
2015012	China	2015	N/A	N/A	A	KY612442
SDAU09C2	China	2009	N/A	N/A	B	HM446005
FJ15TH0	China	2016	Hetian chicken	LL	B	KX839489
DL00766	China	2018	Hy-line variety brown	N/A	B & E	MH454773
RAV0	USA	1980	Commercial layer chicken	LL	E	MF817822
AF227	USA	2010	Commercial broiler	LL	E	MF817820
AF229	USA	2010	Commercial broiler chicken	LL	E	MF817821
JS11C1	China	2012	Chinese indigenous chicken	N/A	K	KF746200
JS13LY19	China	2018	Chicken	N/A	K	MG770235
HPRS-103	UK	1989	Parental meat-type chicken	ML	J	Z46390
SCAU-HN06	China	2007	Commercial layer chicken	He	J	HQ900844
PDRC-59831	USA	2007	Broiler	He and ML	J	KP284572
TW-3593	China Taiwan	2008	Taiwan country chickens	N/A	N/A	HM582658
HLJ09MDJ-1	China	2009	Layer chicken	He	J	JN624880
JL093-1	China	2009	Layer hens	He	J	JN624878
JL09L01	China	2009	Commercial egg-type chickens	He and ML	J	HQ148555
YZ9902	China	2010	White meat-type chicken	He	J	HM235670
GD1109	China	2011	Commercial layer chicken	He and ML	J	JX254901
GDKP1202	China	2012	Local commercial broilers	ML	J	JX453210
GifN_001	Japan	2015	N/A	N/A	N/A	MK757486
M180	China	2016	Late-feathering Chinese yellow chicken	N/A	J	KX611834
K243	China	2016	Fast-feathering Chinese yellow chicken	N/A	J	KX611833
GDHN-YM1	China	2018	Commercial layer chicken	He	J	MK683478
GDHN-YM2	China	2018	Commercial layer chicken	He	J	MK683479
SDAU1703	China	2018	Hy-line chicken	He	J	KY980659

ML: myeloid leukosis; He: hemangioma; LL: lymphoid leukosis; N/A: data not available.