The following antibodies (BioLegend) were used for flow cytometry: Biotin-conjugated anti-mouse Sca1 (D7), BV421-labeled anti-mouse Sca1 (D7), APC-labeled anti-mouse EpCAM (G8.8), FITC-labeled anti-mouse EpCAM (G8.8), PE-labeled anti-mouse CD24 (M1/69), Biotin-conjugated anti-mouse CD24 (M1/69), Biotin-conjugated anti-mouse CD81 (Eat2), Streptavidin-APC, and Streptavidin-PECy7. For immunofluorescence staining of sections, the following antibodies were used: Biotin-conjugated anti-mouse CD81 (Eat2, BioLegend), PE-labeled anti-mouse CD81 (Eat2, BioLegend), Purified anti-mouse Sca1 (e13-161.7, BioLegend), Biotin-conjugated anti-mouse Sca1 (177228, R&D Systems), Streptavidin-Alexa647 (BioLegend), Alexa488-labeld anti-Rat IgG (Jackson). Dead cells were excluded by propidium iodide (Sigma) or Zombi NIR (BioLegend) staining.
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