INHBE and neoplasm: This is functionally important, since overexpression of activin in keratinocytes of transgenic mice accelerated the wound healing process (Munz et al, 1999), but also promoted skin carcinogenesis and malignant progression of existing tumors in a murine skin cancer model where tumors are induced by a combination of the mutagen 7,12‐dimethylbenzo(a)anthracene (DMBA) and the tumor promoter 12‐O‐tetradecanoylphorbol‐13‐acetate (TPA) (Antsiferova et al, 2011).