Table 1.

Concentrations of primary antibodies.

Primary antibody	Source	Concentration
CD8 rabbit anti-human polyclonal antibody (17335-1-AP)	Proteintech, US	1:1,000
CD4 mouse anti-human monoclonal antibody	DAKO, Denmark	Ready-to-use
FOXP3 rabbit polyclonal antibody (22228-1-AP)	Proteintech, US	1:1,600
PD-L1 rabbit anti-human polyclonal antibody (28076-1-AP)	Proteintech, US	1:200
CD105 mouse anti-human monoclonal antibody (BM1725)	Boster, Wuhan, China	1:100
NG2 rabbit anti-human monoclonal antibody (ab183929)	Abcam, UK	1:100