If you're asking what medications supress the immune system, steriods supress the immune system, as do medications given to organ transplant recipients.
HPV is not contagious as long as your immune system supresses it. If it is dormant, your immune system is properly controlling it and it isn't contagious.
See: Agent Orange
in order to defeat any external agent
the production of antibodies against a specific agent by the immune system.
Interferon alpha 2a is an agent that stimulates the immune system.
antibodies
Immunization is the process by which an individual's immune system becomes fortified against an agent. A person is made either immune or resistant to a disease.
Antiviral and antibacterial agent, boosts the immune system, lowers cholesterol levels.
Inflammation is the way the immune system deals with things So if something is inflammatory it involves an immune reaction.
Lysozymes
your immune system and your White blood cells produce antibodies
BSE, bovine spongiform encephalopathy, is a prion disease in bovine mammals, notably cows. Because the causative agent is not living and is in fact related to 79 proteins naturally occurring in bovines, the immune system does not recognize the protein as a pathogenic agent and thus is unable to mount a resistance against it. Therefore, the immune system of any animal infected with a prion disease is unable to fight against it.