Immune Response and Pathogen

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• How do pathogens evade the immune system?

  Immune evasion is very much what it sounds like, mechanisms used to avoid the immune response.

• Immune detection of a pathogen

  The solution details how this recognition occurs and leads to the initiation of an immune response against the pathogen. The explanation is given in 182 words.

• Specific and non-specific defense against pathogens

  If the pathogen is able to penetrate into the body, it is the job of the innate immune response to recognize the pathogen as a foreign entity and initiate an immune response against it.

• Antigenic variation

  Antigenic variation is an immune evasion mechanism employed by numerous pathogens to avoid the host immune response. The goal of this variation is to avoid the adaptive immune response.

• Pathogens circumventing host cellular immune defenses

  Once the adaptive immune response has been triggered, there is production of anti-pathogen antibody and T cells capable of infecting pathogen-infected cells.

• Humoral and Cell-Mediated Immunity

  106904 Humoral and Cell-Mediated Immunity This posting has a flow chart that outlines the immune response that occurs when a pathogen enters the body.

• Immune response

  So if the same pathogen infect the body again, the immune response will remember it and quickly destroy the pathogens with greater force.

• Blocking and inducing apoptosis

  The induction of apoptosis is a vital process in the body, and in the case of the immune response, pathogen infected cells are often given pro-apoptotic signals by T cells that results in their death and prevents spread of the pathogen.

• Molecular mimicry hypothesis and autoimmunity

  Consequently, tolerance to autoantigens breaks down leading to cross-reaction of the pathogen-specific immune response with host structures to cause tissue damage and disease.