Definition: The word 'antibody' refers to substances that bind to antigens, triggering an immune response against them. Definition: An antibody binds to a protein on the surface of another antigen or presents itself in the form of a peptide chain on its surface, thereby stimulating the immune system to recognize and attack the antigen. The specific type of antibody determines the type of immune response elicited by it (e.g., IgM, IgG), as well as the duration and severity of the immune response. In summary, an antibody is the key component in the immune response that recognizes and neutralizes antigens.
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