The steps for immunofluorescence are the same as shown in our previous article [33 (link)]. The paraffin-embedded slides were incubated with mouse anti-human CD11b (ab212505, Abcam), rabbit anti-human SPP1 (ab214050, Abcam), or rabbit anti-human FABP4 (ab92501, Abcam) and then horseradish peroxidase-conjugated secondary antibody. After that, the slides were stained with DAPI.