What is antigen?
Antigen is a substance that stimulates an immune response. When exposing the antigen, the body considers it a foreign material and takes steps to neutralize the antigen. Usually the body achieves antibodies that are designed to defense of the body from invasion potentially dangerous substances. Several medical tests can be used to test antigens to determine whether anyone has been exposed to illnesses or toxin.
The term "antigen" comes from understanding that many foreign substances stimulate anti body Eration in the immune system. These antibodies can be beneficial, as if the body learns to fight a virus such as measles, or can be harmful in the case of allergies. Unique signatures of these antibodies can be identified in medical testing that can be used to determine why the patient shows a set of symptoms.
Most animals have an adaptive immune system. Summune system, many cells serve specific functions that help the immune system recognize and solveIT potential threats for his hosts. Some of these cells learn to recognize substances that are not from the host organism. When antigen is identified, these cells warn other cells on the problem and the body takes measures.
Many things can be a source of antigens. For example, people can inhale or consider bacteria and viruses from other organisms. Toxin can also be a source of antigen because the body realizes that the substance is alien and potentially dangerous. Transplanted organs and tissue material can also generate an antibody response because the body does not recognize them as part of the host organism. Because of this problem, people who are subject to organ transplants, immunosuppressive drugs that are designed to reduce the antigen reaction so that the bodywork is used by an established organ.
Sometimes the body develops an antigen response to something that is not really harmful. This is better known as butRgie. In these cases, the body is exposed to a small amount of antigen, such as peanut butter, wheat or bee. The auxiliary cells in the immune system indicate the substance and trigger the body and produce cells that will be against the substance against the substance if they reappear in the body. When the unconscious human host eats peanuts, to the slice of the toast, or is mixed again, the body starts an antibody response that can cause serious discomfort and sometimes even death.