Tissue sections were stained using 5 µg/mL purified mouse anti-human CD3 (UCHT1; BioLegend) and 4 µg/mL purified hamster anti-mouse CD31 (2H8; Thermo Fisher Scientific) with goat anti-mouse IgG AF647 (Thermo Fisher Scientific) and goat anti-hamster IgG AF488 (Abcam) detection antibodies, and mouse anti-GD2-FITC (14.G2A; BD) at a dilution of 1:100. GFAP was detected with polyclonal rabbit-anti human GFAP (1:500, Agilent) and donkey anti-rabbit IgG AF55 detection (1:500, Thermo Fisher Scientific).
Whole-slide imaging was performed on a Zeiss Axio Scan.Z1 slide-scanner using 20× objective and ZEN 3.1 Blue system software. Fluorescence overlays were created by merging channels and applying false color using FIJI (ImageJ, National Institutes of Health).
For further detail see