Epididymal fat pad from a tamoxifen-inducible lineage tracing model made by crossing Wt1CreERT2 with the mTmG reporter line, Coherent anti-Stokes Raman scattering (CARS) at 2845 cm-1 to visualise lipid droplets (cyan) and simultaneous fluorescence imaging of tdTomato (red) and GFP (green), enabling visualization of specific cellular structures, made by Dr Martin Lee University of Edinburgh.