ADSL and infection: AMPs are either induced or expressed constitutively by many cell types, including keratinocytes, immune cells, sebocytes, and dermal preadipocytes.3 Regulation of this system appears important for maintaining health, as lack of appropriate AMP production closely associates with increased susceptibility to infections,4–7 while overproduction of some AMPs can drive pathogenic inflammation due to pro-inflammatory functions that are inherent in many of the AMPs.8,9