An antigen (G. anti-against, genos-genus) is such a macromolecules which, upon introduction into the body, stimulates production of antibodies and react specifically with them. The antigenic macromolecules include almost all proteins, most polysaccharides, nucleoproteins, lipoproteins, glycoproteins, and various small bio-chemicals if they are attached to proteins or polypeptides. Antigens are characterized by two essential properties: […]
Define Antigens (With Diagram) | Immunology
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Antibodies: Meaning, Structure and Mechanism
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In this article we will discuss about:- 1. Meaning of Antibodies 2. Structure of Antibodies 3. Classes 4. Mechanism of Formation. Meaning of Antibodies: Antibodies, the magic bullets of the immune system, are glycoproteins formed in response to antigenic stimulation and counteract with antigens with great specificity. The antibodies are found in the serum fraction […]
Short Notes on Polyclonal Antibodies (With Diagram)
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Most antigens offer multiple epitopes (antigenic determinants) and therefore induce proliferation and differentiation of a variety of B-cell clones, each derived from a B-cell that recognizes a particular epitope. Polyclonal antibodies represent a mixture of antibodies synthesized by variety of such B-lymphocyte (B-cell) clones. The resulting polyclonal antibodies in the antiserum are heterogenous, comprising a […]
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