Question

Know the kinetics of an immune response and how to explain immune response to parasite antigens and the development of immune memory.

Answer 1

Immunity is the ability of the system to react to anything foreign invading the system. It can be increase in temperature or swelling to make the system hostile for the invading organism. When a parasitic antigen invades the system, the body produces corresponding antibody.

When the antigen infects a system the body produces immunoglobins or Ig of various forms and helps to fight the invader. Once the antibodies are produced, the body keeps an account of the antigen which caused the production of antibody and the next attempt by the parasite is fought upon more quickly due to the memory of the previous instance.

This concept is primarily used for vaccination, in which the required antigen is passed in avirulent state. The body produces antibodies and this memory helps it to fight the actual invasion of the parasite , if any in future.