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  1. Immune System
  2. Immunology
  3. Immunization, Active Immunity and Passive Immunity
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Introduction
Immunology
Innate (Non-specific) Immune System
Interferons
Adaptive Immune System
Classical Pathway of Complement System
Alternative Pathway of Complement System
Major Histocompatibility Complex (MHC Class I and II)
Antibodies (Immunoglobulins)
Activation of Lymphocytes
Antigen-Presenting Cells (Macrophages, Dendritic Cells and B-Cells)
Mechanism of B-Lymphocytes
Alpha Beta T-cells
Gamma Delta T-Cells
Primary vs. Secondary Immune Response
Immunization, Active Immunity and Passive Immunity
Grafting, Organ Transplants and Immunosuppression
ABO Blood Types
ABO Blood Types (Part II)
Rh Factor and Rh Incompatibility
Autoimmunity
Autoimmunity (Autoimmune Diease)
Innate and Adaptive Immune Systems
HIV, AIDS and Helper T-Cells
Allergens and Allergic Reactions
Immunosurveillance and Cancer Cells
Lymphatic System

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Immunization, Active Immunity and Passive Immunity

Content Provider AK Lectures
Description During the natural process of infection, our immune system not only aims to destroy that particular pathogenic infection but it also mounts a defensive response in case the body is ever reinfected with that same type of pathogen. That is, our body produces memory cells that contain antibodies that are specific to that the particular infecting pathogenic. These memory cells usually remain within the individual for the rest of their lives. This process in which our body learns from its first infection and creates memory cells in case reinfection is known as active immunity. Active immunity can also be induced via artificial means. Immunization is the process by which we confer active immunity onto an individual via the process of vaccination. A vaccine usually contains an inoculated version of a pathogen or a small part of their antigen (epitope). When injected into the body, it causes the adaptive immune system to create memory cells but it does not elicit the same severe effects that a natural infection would. Another type of temporary immunity is called passive immunity. In passive immunity, antibodies are injected into the body and are allowed to circulate through the blood and lymph system. If they come across their antigen counterpart, they will bind onto it and cause a defense immune response. Passive immunity can be given either artificially (produced in a laboratory) or naturally (mother to child via the placenta or breastmilk). Unlike active immunity, passive immunity does not produce memory cells and therefore only lasts several months.
Language English
Access Restriction Open
Subject Keyword Biology adaptive vaccine breastmilk memory cells causes placenta antigen epitope blood
Content Type Video
Educational Role Teacher Student
Educational Use Self Learning Lecture Reading
Resource Type Video Lecture
Education Level Under Graduate
Subject Life sciences; biology Diseases
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