Single and dual antibody staining using tyramide signal amplification (ThermoFisher) were performed on formalin-fixed, paraffin-embedded skin samples as previously described (18 (link)). Antibodies were all purchased from Sigma. Immunohistochemistry images were obtained with an Evos FL Auto microscope (Life Technologies). Confocal images were captured on an Olympus Fluoview 1000 confocal microscope using an oil immersion 100X objective.