In this article we will discuss about cell-mediated immunity. While humoral immunity protects the body from extracellular pathogenic agents and soluble antigens like toxins, cell-mediated immunity is directed against intracellular pathogens. The infected body cells are recognized by the immune cells and are destroyed. Also, abnormal body cells, like cancer cells, are recognized as non-self […]
Cell-Mediated Immunity (With Diagram)
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Role of Antibodies and Antigens | Human Immunology
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In this article we will discuss about the role of antibodies and antigens in humoral immunity. Role of Antibodies: Humoral immunity is antibody-mediated. It protects body from extracellular pathogenic agents by combining with them to form antigen-antibody complex, leading eventually to their elimination. The antibodies play at least in three different ways in this process […]
Human Body’s Natural Barriers to Foreign Invaders
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The human body is provided with a number of natural barriers which protect it from all types of foreign invaders. These include: 1. Skin 2. Mucous Membrane 3. Chemical Factors 4. Commensal Organisms 5. Cellular Components 6. Some Proteins Involved in Non-Specific Defense 7. Inflammation. 1. Skin: The human body is externally covered by skin […]
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