<prompt> The following is NOT a component of innate immunity -Epithelial surfacesAntibodyLysozymeSebum  <response>: Anatomical barriers include physical, chemical and biological barriers. The epithelial surfaces skin mucous membrane, Mucus, saliva, lysozyme,Tears,flushing action of urine etc.. Ref: Ananthanarayan Panikers textbook of microbiology 9th edition pg.no. : 79-81 