Attributes of Selected areas Mouth - rich resident microflora. Otherwise this is a vulnerable area. If organisms get down into the alveolar area they have easy access to the blood. Urethra - flow of urine important. Female Genitalia - microflora very important.
Mucus plug in the cervix important in preventing movement of microbes into the uterus.
These cells trigger inflammation and allergies. Macrophages can be resting or angry and they have several activation states in between. They are phagocytic cells and they are very important in antigen presentation. These cells make antibody. Their antigen receptor is the antibody on their surface.