TABLE 1.

Expression of ExoPD-L1 secreted by human and mouse tumor cell lines.

Tumor	High	Low	Negative	References
Breast cancer	MDA-MB-231#			Chen G. et al., 2018; Yang et al., 2018
	BT549, 4T1*	MCF-7		Yang et al., 2018
			HCC1954#, 67NR*#, SKBR&	Monypenny et al., 2018
Colon cancer	RKO			Yang et al., 2018
	MC38*			Poggio et al., 2019
Gastric cancer	MKN74	SGC7901, BGC823, NCI-N87, NUGC4, MKN45	KATOIII, AGS, MGC803	Fan et al., 2019
Glioblastoma	G34, G35, CT2A*	G44#, G157#		Ricklefs et al., 2018
Melanoma	WM9#, WM164#, UACC-903	WM1552C, WM35, WM793, WM902B	MEL624	Chen G. et al., 2018
		SK-MEL-28		Poggio et al., 2019
	B16-F10*			Chen G. et al., 2018; Cordonnier et al., 2020
	SK-MEL-2			Cordonnier et al., 2020
	A375			Chen G. et al., 2018; Huang et al., 2020
			A375	Yang et al., 2018
NSCLC	H1299#, H358#, H1264#			Chen G. et al., 2018
	H460, H1975	A549	LLC-1*	Kim et al., 2019
	HCC827			Yang et al., 2018
	A549			Cordonnier et al., 2020
Prostate cancer	PC3#, TRAMP-C2*#		LNCaP	Poggio et al., 2019

*, murine; #, IFN-γ inducible PD-L1 expression; &, IFN-γ non-inducible PD-L1 expression.