keresztreagivitás
Keresztireagitivitás, also known as cross-reactivity, is a phenomenon where an antibody designed to bind to a specific antigen also binds to other, structurally similar antigens. This occurs because the molecular structures of different antigens can share common epitopes, which are the specific sites on an antigen that an antibody recognizes and binds to. When these epitopes are similar enough, an antibody produced against one antigen may exhibit a degree of binding to another.
This concept is particularly important in immunology and medicine. In diagnostic tests, for example, cross-reactivity can