Immune tolerance the resulting effect is similar. Immune tolerance is important for normal physiology. Central tolerance is the main way the immune system learns to discriminate self from non-self. Peripheral tolerance is key to preventing over-reactivity of the immune system to various environmental entities (allergens, gut microbes, etc.). Deficits in central or peripheral tolerance also cause autoimmune disease, resulting in syndromes such as systemic lupus erythematosus, rheumatoid arthritis, type 1 diabetes, autoimmune polyendocrine syndrome type 1 (APS-1), and immunodysregulation polyendocrinopathy enteropathy X-linked syndrome (IPEX), and potentially contribute to asthma, allergy, and inflammatory bowel disease. And immune tolerance in pregnancy is what allows
Avian immune system and shore species. Control of infectious disease is essential for the production of healthy poultry flocks. Vaccination programs have been used extensively in North American factory farming methods to induce avian immune responses against bird pathogens. These include Marek’s Disease, Duck Hepatitis Virus, Chicken Anemia Virus, Turkeypox, Fowlpox and others. Bird immunity is reliant on a complex network of cell types and soluble factors that must properly function in order for large commercial poultry flocks to survive. Infectious bursal disease virus and chicken anemia are ubiquitous and have increased interest in combatting avian pathogens. Parasites of birds are another emerging