- Immunology : The study of all aspects of the immune system in all animals.
- Infectious disease : In broad terms, diseases caused by living organisms; also a subspecialty of internal medicine concerned with the treatment of such diseases
- Microbiology : The study of microorganisms (overlapping with areas of virology, bacteriology, mycology, and parasitology).
- Pathogen : The organism that causes an infectious disease
- Preventive medicine : A medical specialty concerned with recognizing and reducing health hazards to populations and individuals, with specialties that include the emergency recognition of infectious or environmental hazards, and the treatment of adverse effects of high (undersea) and low (aerospace) medicine, social behavior (e.g., drug abuse) and poisoning
- Vaccination : A preventative health measure that can confer immunity to an infectious disease, without requiring that the vaccinated individual actually contract the disease.
- : A controlled reduction of strength of some force (e.g., voltage) or microorganism (e.g., an attenuated virus used in a vaccine
- Toxoid : Add brief definition or description
- Antigen : A molecule that induces an immune response, such as bee pollen or proteins from viruses or bacteria.
- : Immune substances (e.g., immunoglobulin), either created from living cells or synthesized to replicate a natural substance, which is purified and used as a passive immunizing agent against specific bacterial toxins.
- Complement : Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See Complement (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
- Immunoglobulin : Proteins produced by lymphocytes, which are primarily antibodies to attack material the body considers hostile, although some may act as cytokines, signaling to other cells
- Ligand : Add brief definition or description
- Lymphocyte : Leukocyte originating in lymphoid tissues, fundamental to the immune system, regulating and participating in acquired immunity, with receptor molecules on its surface that bind to a specific antigen.
- Monoclonal antibody : Highly specific antibodies produced in large quantity by the clones of a single hybrid cell formed in the laboratory by the fusion of a B cell with a tumor cell.
- Neutrophil : Leukocytes (white blood cells) whose primary role is in the cell-mediated immune system, where they destroy hostile substance by phagocytosis. They do release interleukin-12.
- Opsonins : A family of proteins, generated by various immune mechanisms, which "tag" cells as targets for defensive digestion by cells that perform phagocytosis