a, Dermal versus fascia EPF-traced chimeras with two injury conditions. b–f, Representative immunolabelling for the fibroblast markers DPP4 (b), DLK1 (c), CD24 (d), CD34 (e) and LY6A (f) from 4 biological replicates. g, Areas analysed (top) for marker-positive EPF quantification (bottom). Data are mean ± s.e.m.; n = 4 (DPP4 in dermal EPFs), 5 (all markers in dermal EPFs with the exception of DPP4 and all markers in fascia EPFs with the exception of DLK1, CD34 and LY6A), 6 (DLK1 in fascia EPFs), 7 (CD34 in fascia EPFs) or 11 (LY6A in fascia EPFs) images analysed from 4 biological replicates. One-way ANOVA, multiple comparison Tukey’s test, 95% CI. Dotted lines delimit the wound bed. Scale bars, 200 μm.