An autoimmune disease could occur if

Question

Quizplus · Accepted Answer

Autoimmune diseases occur when the immune system attacks and damages the body's own tissues and cells, mistaking them for foreign invaders. This can happen when B cells and T cells are unable to recognize self-antigens displayed by host cells, leading to a breakdown in self-tolerance. Choice A is incorrect because B cells and helper T cells need to interact to produce an effective immune response, but the failure to do so would not necessarily result in autoimmune disease. Choice B is incorrect because a mismatch between a helper T cell receptor and a pathogen antigen would not necessarily lead to autoimmune disease. Choice D is incorrect because the reactivation of antibodies from a previous infection would not by itself cause autoimmune disease.

An Autoimmune Disease Could Occur If