IVL and squamous cell carcinoma: Moreover, miR‐21‐3p expression was also increased in other murine skin lesions associated with inflammation, such as chemically induced cutaneous murine papilloma and squamous cell carcinomas (Appendix Fig S2B), while moderate epidermal barrier disruption (obtained by tape stripping and monitored using involucrin as a control) did not cause an increase in miR‐21‐3p expression (Appendix Fig S2C).