RNASE7 and Alzheimer disease: Colonization with S. aureus is frequent in AD-patients, affecting lesional as well as non-lesional skin30, and may partly explain the higher hBD-3 and RNase7 concentrations in AD skin, since hBD-3 and RNase7 have been shown in vivo to be of importance in relation to S. aureus infections31,32.