Immune System
There are two types of immunity, innate immunity and adaptive immunity. Innate immunity are the protections that an organism is born with and that it receives from its mother. Adaptive immunity (acquired immunity) is when the body makes specific cells to fight off invading organisms, either by having the virus or getting a vaccination. An antigen is a molecule that provokes a specific immune response. A Nonspecific response is a response that can occur for a variety of different invaders, an inflammatory response happens at the site of the injury and is characterized by redness and swelling at the site of the injury. A specific immune response would be specific to the type of antigen that is attacking the system. There are two ways to acquire adaptive immunity, actively by getting the virus first hand or passively by a vaccination which is a weakened or dead version of a virus. T-Cells these are involved by more regulatory activities called cell-mediated immunity. They don't make antibodies; they regulate other cells' work. B-cells are involved in what is called humoral immunity. They do their job by making antibodies. Neutrophils are a type of white blood cells (WBCs) that are the first to appear at the site of damaged tissue or infection. Esinophils are a type of WBC that are associated with the elimination of parasites in a chronic inflammatory response. Basophils are WBCs that are I n the blood and release histamine that promotes inflammation. Monocytes are WBCs that develop macrophages, which are cells that destroy microorganisms by engulfing them and then fusing with a lysosome. Phagocytosis is the process by which the material is taken into the cell by being engulfed by the membrane and forming a vesicle. A part of the innate immunity for a human is the mucus membrane, this includes cells that line the surface of the digestive, respiratory and urogenital tracts. An allergy is a hypersensitive response by the immune system. Mast cells found under the mucous membranes release histamine that promote inflammation during allergic reactions. An autoimmune disease is a type of disease that occurs when an organism attacks its own cells and treats them as foreign