bacteria on skin silhouette icon. skin layer with microbes flora black pictogram. microorganisms on structure of dermis

skin bacteria microbes icon vector epidermis layer moisture flora barrier cell dermis human microbiome structure illustration anatomy damage healthy dermatology care protection pore face acne microorganisms microbiology research microbiota staphylococcus infection normal inflammation magnifying skincare intestinal health salmonella sebum pictogram isolated flat silhouette black