Mucous Membrane - The moist linings of body passages and internal cavities involved with absorption and secretion of substances.⏎
Immune System - The system of biological structures and processes that protects the body from foreign substances, including pathogens.⏎
Immunization - The process of strengthening the body’s defense against a particular infectious agent, often accomplished by receiving a vaccine.⏎
Institute of Medicine - An independent, nonprofit organization that works outside of government to provide unbiased and authoritative advice on health and medicine to decision makers and the public.⏎
Latent Infection - An infection that is currently not producing or showing any symptoms but has the potential of being reactivated and then manifesting symptoms.⏎