Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Immunological Memory

Immunological Memory

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...

Vaccines

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...

Active versus Passive Immunity

Active versus Passive Immunity

Immunity, along with the ability to limit pathogen growth to prevent significant body tissue damage, can be gained either by (1) actively developing an immune response within the individual after exposure to a pathogen or after getting vaccinated or (2) passively transferring immune components from an immune individual to one who is nonimmune. Both these forms of immunity can be found naturally and in medical practices.
Active Immunity
Active immunity refers to the resistance one develops...

Special Features of Adaptive Immunity

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,...

Cells of the Adaptive Immune Response

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...

Cell-mediated Immune Responses

Cell-mediated Immune Responses

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

What if protective immunity is antigen-driven and not due to so-called "memory" B and T cells?

Immunological reviews·2018

Same author

Immunological memory: lessons from the past and a look to the future.

Nature reviews. Immunology·2016

Same author

A platelet-mediated system for shuttling blood-borne bacteria to CD8α+ dendritic cells depends on glycoprotein GPIb and complement C3.

Nature immunology·2011

Same author

Tissue macrophages suppress viral replication and prevent severe immunopathology in an interferon-I-dependent manner in mice.

Hepatology (Baltimore, Md.)·2010

Same author

Long-lasting immunity by early infection of maternal-antibody-protected infants.

European journal of immunology·2009

Same author

Innate immune-induced depletion of bone marrow neutrophils aggravates systemic bacterial infections.

Proceedings of the National Academy of Sciences of the United States of America·2009

Search research articles

Related Experiment Video

Updated: May 23, 2026

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle

Published on: July 11, 2015

Immunological memory ≠ protective immunity.

Rolf M Zinkernagel¹

¹University of Zurich, Zurich, Switzerland. rolf.zinkernagel@pty.usz.ch

Cellular and Molecular Life Sciences : CMLS

|April 7, 2012

Summary

Immunological memory, as defined in textbooks, differs from true protective immunity. Protective immunity relies on pre-existing antibodies and T cells, not just faster responses after immunization, impacting vaccine strategies.

Area of Science:

Immunology
Infectious Diseases
Vaccinology

Background:

The concept of immunological memory is often defined by laboratory models measuring accelerated responses post-immunization.
This academic definition may not fully represent the mechanisms of protective immunity against natural infections.
A co-evolutionary perspective, considering both host and pathogen, is crucial for understanding protection.

Purpose of the Study:

To critically review the distinction between textbook immunological memory and actual protective immunity.
To analyze the mechanisms underlying long-term protection against infectious agents.
To explore the implications of these distinctions for vaccine development and public health.

Main Methods:

Critical review of existing literature and immunological concepts.

More Related Videos

Murine Superficial Lymph Node Surgery

Murine Superficial Lymph Node Surgery

Published on: May 21, 2012

The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity

The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity

Published on: December 14, 2016

Related Experiment Videos

Last Updated: May 23, 2026

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle

Published on: July 11, 2015

Murine Superficial Lymph Node Surgery

Murine Superficial Lymph Node Surgery

Published on: May 21, 2012

The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity

The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity

Published on: December 14, 2016

Co-evolutionary analysis from host and pathogen perspectives.

Examination of experimental models versus natural infection dynamics.

Main Results:

Textbook immunological memory, characterized by quicker and better responses, is observed in specific laboratory settings.
These enhanced responses do not always equate to the primary mechanisms of protection.
Protective immunity is largely dependent on pre-existing neutralizing antibodies and activated T cells at the time of infection.

Conclusions:

True protective immunity relies on pre-existing immune components, such as maternal antibodies, rather than solely on memory responses.
Both antibody and T cell levels are antigen-driven, highlighting the importance of sustained immune engagement.
Rethinking vaccine strategies is necessary to ensure robust and lasting protection against infectious diseases.