JUNB and seborrheic dermatitis: Likewise human seborrheic dermatitis, the JunB cKOs displayed typical histological features including sebaceous gland hyperplasia, epidermal hyperplasia with signs of spongiosis (edema between epidermal cells), parakeratosis and a persistence of infiltrating inflammatory cells (Supplementary Figure 2G, 3A, 3B and 3C).