Table 1. Sequences of primers used.

Gene	Forward primer, 5′-3′	Reverse primer, 5′-3′
Mouse
β-actin	GGC​TGT​ATT​CCC​CTC​CAT​CG	CCA​GTT​GGT​AAC​AAT​GCC​ATG​T
eMLV spliced	CCA​GGG​ACC​ACC​GAC​CCA​CCG	TAG​TCG​GTC​CCG​GTA​GGC​CTC​G
GLN	TGT​GTA​AGT​CCA​GAC​GCA​G	CCA​ACC​TAC​TCC​AAA​AAC​AG
MervlPol	ATC​TCC​TGG​CAC​CTG​GTA​TG	AGA​AGA​AGG​CAT​TTG​CCA​GA
MMERVK	CAA​ATA​GCC​CTA​CCA​TAT​GTC​AG	GTA​TAC​TTT​CTT​CTT​CAG​GTC​CAC
MoMLV	CGA​GAC​CTC​ATC​ACC​CAG​GTT​AAG	CAT​CAG​AGC​AGC​CGA​TTG​TCT​G
MTA	ATG​TTT​TGG​GGA​GGA​CTG​TG	AGC​CCC​AGC​TAA​CCA​GAA​C
MusD	GTG​CTA​ACC​CAA​CGC​TGG​TTC	CTC​TGG​CCT​GAA​ACA​ACT​CCT​G
pMLV	CCG​CCA​GGT​CCT​CAA​TAT​AG	AGAAGGTGGGGCAGTCT
xMLV	TCT​ATG​GTA​CCT​GGG​GCT​C	GGC​AGA​GGT​ATG​GTT​GGA​GTA​G
Mx1	GAC​CAT​AGG​GGT​CTT​GAC​CAA	AGA​CTT​GCT​CTT​TCT​GAA​AAG​CC
Mx2	GAG​GCT​CTT​CAG​AAT​GAG​CAA​A	CTC​TGC​GGT​CAG​TCT​CTC​T
Oas1b	GGC​CTC​TAA​GGG​GGT​CAA​G	CTG​GCA​GCA​CGT​CAA​ACT​TC
Isg15	GGT​GTC​CGT​GAC​TAA​CTC​CAT	TGG​AAA​GGG​TAA​GAC​CGT​CCT
Oasl1	CAG​GAG​CTG​TAC​GGC​TTC​C	CCT​ACC​TTG​AGT​ACC​TTG​AGC​AC
Ddx58	AAG​AGC​CAG​AGT​GTC​AGA​ATC​T	AGC​TCC​AGT​TGG​TAA​TTT​CTT​GG
Ifna1	CTG​TGC​TTT​CCT​GAT​GGT​CCT	TCC​ATG​CAG​CAG​ATG​AGT​CCT
Ifnb1	AGC​TCC​AAG​AAA​GGA​CGA​ACA	GCC​CTG​TAG​GTG​AGG​TTG​AT
Ifng	ATA​AGC​GTC​ATT​GAA​TCA​CAC	CTC​AAA​CTT​GGC​AAT​ACT​CA
Ifnl2	GCA​GAC​CTG​TAC​ACA​GCT​TCA	CAG​GTT​GGA​GGT​GAC​AGA​GG
Ifnl3	GTT​CAA​GTC​TCT​GTC​CCC​AAA​A	GTG​GGA​ACT​GCA​CCT​CAT​GT
Ifnar1	CTT​GTA​GCC​TCA​CCG​CCT​A	CAA​CAT​CCA​CAA​GCA​CGT​CCA
Ifngr1	GTG​GAG​CTT​TGA​CGA​GCA​CT	ATT​CCC​AGC​ATA​CGA​CAG​GGT
Il10rb	ACC​TGC​TTT​CCC​CAA​AAC​GAA	TGA​GAG​AAG​TCG​CAC​TGA​GTC
Stat1	AAA​TGC​CCA​AAG​ATT​TAA​TCA​GG	TTG​GTC​GCT​CTT​CGC​CAC​A
Irf1	ATG​CCA​ATC​ACT​CGA​ATG​CG	TTG​TAT​CGG​CCT​GTG​TGA​ATG
Irf5	GGT​CAA​CGG​GGA​AAA​GAA​ACT	CAT​CCA​CCC​CTT​CAG​TGT​ACT
Irf7	CAC​AGT​CTT​CCG​CGT​ACC​C	TCC​CGG​CTA​AGT​TCG​TAC​ACC
Irf9	GAA​ATC​ACC​ATG​CAA​GCG​AAG	TGA​GTG​GTT​TAC​AAC​GCC​AT
Gbp3	GAG​GCA​CCC​ATT​TGT​CTG​GT	CCG​TCC​TGC​AAG​ACG​ATT​CA
CD274 (PD-L1)	GCT​CCA​AAG​GAC​TTG​TAC​GTG	TGA​TCT​GAA​GGG​CAG​CAT​TTC
CD274-L2A	TAC​AGC​TGA​ATT​GGT​CAT​CCC​A	GGA​TGG​CCA​TCG​TGC​TAG​GAA
Human
β-actin	CAT​GTA​CGT​TGC​TAT​CCA​GGC	CTC​CTT​AAT​GTC​ACG​CAC​GAT
HLINEORF1F	TTG​GAA​AAC​ACT​CTG​CAG​GAT​ATT​AT	TTG​GCC​TGC​CTT​GCT​AGA​TT
HERV-W	TGA​GTC​AAT​TCT​CAT​ACC​TG	AGT​TAA​GAG​TTC​TTG​GGT​GG
HERV-H	TGGTGCCGTGACTCG GAT	GCT​GAG​TCC​GAA​AAG​AGA​GTC
ERVF2B	AAA​AAG​GAA​GAA​GTT​AAC​AGC	ATA​TAA​AGA​CTT​AGG​TCC​TGC
HERV-E	GGT​GTC​ACT​ACT​CAA​TAC​AC	GCAGCCTAGGTCTCTGG
HERV-F	CCT​CCA​GTC​ACA​ACA​ACT​C	TAT​TGA​AGA​AGG​CGG​CTG​G
HERV-K	AAAGAACCAGCCACCAGG	CAG​TCT​GAA​AAC​TTT​TCT​CTC
HML-5	TGAAAGGCCAGCTTGCTG	CAA​TTA​GGA​AAT​TCT​TTT​CTA​C
OASL1	CTG​ATG​CAG​GAA​CTG​TAT​AGC​AC	CAC​AGC​GTC​TAG​CAC​CTC​TT
DHX58	GGG​CCT​CCA​AAC​TCG​ATG​G	TTC​TGG​GGT​GAC​ATG​ATG​CAC
MX1	GTT​TCC​GAA​GTG​GAC​ATC​GCA	CTG​CAC​AGG​TTG​TTC​TCA​GC
ISG15	CGC​AGA​TCA​CCC​AGA​AGA​TCG	TTC​GTC​GCA​TTT​GTC​CAC​CA
OAS1	GAA​GGC​AGC​TCA​CGA​AAC​C	AGGCCTCAGCCTCTTGTG
IFIT1	TGT​TGA​AGC​AGA​AGC​ACA​CA	TCT​ACG​CGA​TGT​TTC​CTA​CG
MX2	CAG​AGG​CAG​CGG​AAT​CGT​AA	TGA​AGC​TCT​AGC​TCG​GTG​TTC
IFI44	GGT​GGG​CAC​TAA​TAC​AAC​TGG	CAC​ACA​GAA​TAA​ACG​GCA​GGT​A
OAS1	TGT​CCA​AGG​TGG​TAA​AGG​GTG	CCG​GCG​ATT​TAA​CTG​ATC​CTG
OAS2	ACG​TGA​CAT​CCT​CGA​TAA​AAC​TG	GAA​CCC​ATC​AAG​GGA​CTT​CTG
DDX60	CAG​CTC​CAA​TGA​AAT​GGT​GCC	CTC​AGG​GGT​TTA​TGA​GAA​TGC​C
IDH2	CGC​CAC​TAT​GCC​GAC​AAA​AG	ACT​GCC​AGA​TAA​TAC​GGG​TCA
STAT1	CAA​TGG​AAC​TTG​ATG​GCC​CTA	TTC​TAC​AGA​GCC​CAC​TAT​CCG
IRF1	ATG​CCC​ATC​ACT​CGG​ATG​C	CCC​TGC​TTT​GTA​TCG​GCC​TG
IRF5	GGG​CTT​CAA​TGG​GTC​AAC​G	GCC​TTC​GGT​GTA​TTT​CCC​TG
IRF7	GCT​GGA​CGT​GAC​CAT​CAT​GTA	GGG​CCG​TAT​AGG​AAC​GTG​C
IRF9	GCC​CTA​CAA​GGT​GTA​TCA​GTT​G	TGC​TGT​CGC​TTT​GAT​GGT​ACT
CD274 (PD-L1)	TGG​CAT​TTG​CTG​AAC​GCA​TTT	TGC​AGC​CAG​GTC​TAA​TTG​TTT​T
CD274-L2A	TAC​AGC​TGA​ATT​GGT​CAT​CCC​A	AGG​CAG​ACA​TCA​TGC​TAG​GTG