In this article we will discuss about the structure of antigens with the help of suitable diagrams. Acquired immunity only develops after invasion by a foreign organism or toxin. Each organism or toxin contains at least one special chemical compound that is different from other compounds. In general, these are proteins or large polysaccharides and these compounds initiate acquired immunity. [...]
The following basic properties are known to be essential to make a antigens: 1. Foreign Nature 2. Molecular Size 3. Antigenic Determinants and Cross-Reactivity 4. Molecular Rigidity and Complexity 5. Genetic Factors in the Individual. Property # 1. Foreign Nature: The prerequisite for immunogenicity is that the substance should be foreign to the body of recipient. As a result the [...]
In this article we will discuss about: 1. Meaning of Antigens 2. Nature of Antigens 3. Classification 4. Features 5. Factors. Meaning of Antigens: Classically, an antigen is defined as an organism, a molecule, or part of a molecule or substance which may be self or non-self, can evoke noticeable immune response and can bound distinctively with antibodies. Antigenicity is [...]