with anatomical barriers scheme. human body with respiratory, digestive, genitourinary tract, eyes and skin.

acids anatomical anatomy antibody bacteriocins barrier body cervix chart closeup dermatology detailed diagram digestive enzymes epidermis eyes female genitourinary graphic gynecology health healthcare human illustration immunity info intestine lysozyme medical medicine microbes mucus organ phagocytosis protection respiratory scheme skin skincare stomach sweat tears tract urine vaginal vector woman