Our immune system works to protect us from various diseases and infection. The immune system is composed of 4 types: innate, adaptive, and innate. Our immune system can develop immunity either naturally or through deliberate action. Passive immunity is acquired from an immune host or can be transferred from a different person. Passive immunity occurs when an immune system receives antibodies and activated T cells from an outside source. Passive immunity is temporary and requires booster doses to continue.
Active immunity occurs when immune cells recognize and kill a foreign agent or a disease. These antibodies are made by B lymphocytes. They produce one specific antibody for each antigen. These antibodies are responsible for allergies and protect the body from bacteria and parasites. Unlike the inactive immune system, which relies on T-cells for immunity, active immunity is triggered by specific stimuli. This type of immunity is initiated by T helper cells. Cytotoxic T cells destroy bacteria and promote programmed cell death when they encounter a pathogen.
Innate immunity is the body’s natural response to masstamilan infection. It involves the development of B-cells and T-cells. These cells help clear germs through humoral immunity and cell mediated immunity. In addition, memory B-cells and T-cells are produced, forming memory cells and T-cells. In addition to natural immunity, artificial immunity can be acquired through vaccinations and immunoglobulin treatments. Vaccines contain parts of the disease-causing virus to stimulate the primary immune response. Passive immunity, on the other hand, is the result of antibodies produced by another body. Passive immunity is generally inherited from the mother and disappears between six and twelve months.