KRT17 and diabetic foot: In order to contrast the accumulated knowledge on the SSTC-HaCaT responses to AM treatment in an in vivo human model, we studied the presence of Keratin 17 (K17), which is regarded as a marker of epithelial activation [34,35,36,37], on wounded SS- and SSTC-HaCaT cell cultures and biopsies obtained from patients undergoing compassionate treatment of diabetic foot ulcers with AM.