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Related Concept Videos

Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Humoral Immune Responses01:36

Humoral Immune Responses

Overview
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview

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Related Experiment Video

Updated: May 28, 2026

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix
10:37

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix

Published on: October 20, 2021

HBV-Specific Adaptive Immunity.

Antonio Bertoletti1,2,3, Anthony T Tan1, Adam J Gehring1

  • 1Laboratory of Hepatic Viral Diseases, Singapore Institute for Clinical Sciences, Agency of Science Technology and Research (A*Star), 30 Medical Drive, 117609, Singapore.

Viruses
|October 14, 2011
PubMed
Summary
This summary is machine-generated.

Effective control of Hepatitis B virus (HBV) infection depends on adaptive immunity within the liver. This review examines HBV immunity in resolved and chronic infections, considering the liver

Keywords:
B cellsHBVT cells

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Development of an IFN-γ ELISpot Assay to Assess Varicella-Zoster Virus-specific Cell-mediated Immunity Following Umbilical Cord Blood Transplantation

Published on: July 9, 2014

Area of Science:

  • Immunology
  • Hepatology
  • Virology

Background:

  • Hepatitis B virus (HBV) infection control necessitates robust adaptive immune responses.
  • Immune cells, including B cells and T cells, must function within the liver parenchyma.
  • The liver's unique environment influences HBV-specific immunity.

Purpose of the Study:

  • To review the characteristics of HBV immunity in resolved and chronic infections.
  • To analyze the impact of the liver microenvironment on HBV-specific immune responses.

Main Methods:

  • Literature review and synthesis of existing research on HBV immunity.
  • Analysis of immune cell functions (B cells, T cells) in the context of HBV.
  • Examination of the liver's role in modulating immune responses against HBV.

Main Results:

  • Resolved HBV infection is associated with effective adaptive immune control.
  • Chronic HBV infection often involves immune evasion or dysfunction within the liver.
  • The liver parenchyma actively modulates the magnitude and quality of HBV-specific immunity.

Conclusions:

  • Understanding liver-directed immune modulation is crucial for controlling HBV infection.
  • Targeting the liver environment may offer new therapeutic strategies for chronic HBV.
  • Efficient adaptive immunity, operating within the liver, is key to HBV clearance.