Immunofluorescence staining of FOSL1 (migrating keratinocyte marker), IL1b, and CD68 (pro-inflammatory macrophage markers) in human skin, acute, and chronic wounds. DAPI stains the nuclei. Scale bars: 100 μm in low-magnification images and 20 μm in high-magnification images. The signal intensity of epidermal FOSL1 was quantified.