Innate immunity and acquired immunity are both . See Concept 43.1 (Page 953) View Available Hint(s) Innate immunity and acquired immunity are both . See Concept 43.1 (Page 953) dependent on surface secretions from sebaceous and sweat glands, which give the skin an acidic pH that is unfavorable for bacterial colonization based on the trapping of microbes by mucus dependent exclusively on cell-mediated responses characteristics of all vertebrate animals dependent on tears, saliva, and mucous secretions that contain lysozyme, an enzyme that digests bacterial cell walls