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Related Concept Videos

Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Vaccinations01:51

Vaccinations

Overview
Vaccines01:21

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 Immunity01:31

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 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,...

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Related Experiment Video

Updated: Jul 13, 2026

Evaluating the Immune Response of a Nanoemulsion Adjuvant Vaccine Against Methicillin-Resistant Staphylococcus aureus (MRSA) Infection
07:32

Evaluating the Immune Response of a Nanoemulsion Adjuvant Vaccine Against Methicillin-Resistant Staphylococcus aureus (MRSA) Infection

Published on: September 1, 2023

Innate immunity and new adjuvants.

G Mutwiri1, V Gerdts, M Lopez

  • 1Vaccine and Infectious Disease Organization, University of Saskatchewan, 120 Veterinary Road, Saskatoon, SK, Canada.

Revue Scientifique Et Technique (International Office of Epizootics)
|July 18, 2007
PubMed
Summary

New adjuvants that activate innate immunity offer safer, more potent livestock vaccines. This review highlights their role in infectious disease control, moving beyond conventional, less defined vaccine additives.

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Area of Science:

  • Veterinary immunology
  • Vaccinology
  • Infectious disease control

Background:

  • Vaccination is crucial for livestock infectious disease control.
  • Current subunit and killed vaccines often require adjuvants for efficacy.
  • Conventional adjuvants lack defined safety and efficacy profiles for next-generation vaccines.

Purpose of the Study:

  • To review the role of innate immunity in host defense against infectious diseases.
  • To highlight novel adjuvants that activate innate immunity for improved vaccine development.
  • To focus on new adjuvant strategies, excluding conventional ones.

Main Methods:

  • Literature review focusing on innate immunity and novel adjuvants.
  • Analysis of the mechanisms by which new adjuvants stimulate innate immune responses.
  • Identification of promising adjuvant candidates for future vaccine formulations.

Main Results:

  • Innate immunity plays a critical role in initiating protective responses against pathogens.
  • New adjuvants targeting innate immunity pathways show potential for enhanced vaccine potency and safety.
  • Several novel adjuvant candidates demonstrate promising results in preclinical evaluations.

Conclusions:

  • Activating innate immunity is a key strategy for developing safer and more effective livestock vaccines.
  • Novel adjuvants represent a significant advancement over conventional, poorly characterized additives.
  • Further research into innate immunity-activating adjuvants will drive innovation in veterinary vaccinology.