Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Effector Cells: Description

In course

BIO-310: Immunology

Ce cours décrit le fonctionnement du système immunitaire humain et les bases immunologiques de la vaccination, de la transplantation, de l'immunothérapie, et de l'allergie. Il présente aussi le rôle des cellules souches dans la formation des tissus, notamm ...

Description

This lecture covers the characteristics and functions of effector cells in the immune system, focusing on epithelial cells as the first line of defense, dendritic cells, leukocytes, macrophages, and neutrophils. It also explains the differentiation of leukocyte lines, the role of mast cells, eosinophils, and natural killer cells, and the innate immune response.

In MOOC

Introduction to immunology (part 1)

Instructors (2)

David Michael Suter

Bruno Lemaitre

Official source

Quiz

Ontological neighbourhood

Health sciences

Immunology: Immune system

Related concepts (32)

Innate immune system

The innate, or nonspecific, immune system is one of the two main immunity strategies (the other being the adaptive immune system) in vertebrates. The innate immune system is an alternate defense strategy and is the dominant immune system response found in plants, fungi, insects, and primitive multicellular organisms (see Beyond vertebrates).

Immune system

The immune system is a network of biological processes that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue. Many species have two major subsystems of the immune system. The innate immune system provides a preconfigured response to broad groups of situations and stimuli.

Natural killer cell

Natural killer cells, also known as NK cells or large granular lymphocytes (LGL), are a type of cytotoxic lymphocyte critical to the innate immune system that belong to the rapidly expanding family of known innate lymphoid cells (ILC) and represent 5–20% of all circulating lymphocytes in humans. The role of NK cells is analogous to that of cytotoxic T cells in the vertebrate adaptive immune response. NK cells provide rapid responses to virus-infected cell and other intracellular pathogens acting at around 3 days after infection, and respond to tumor formation.

Dendritic cell

A dendritic cell (DC) is an antigen-presenting cell (also known as an accessory cell) of the mammalian immune system. A DC's main function is to process antigen material and present it on the cell surface to the T cells of the immune system. They act as messengers between the innate and adaptive immune systems. Dendritic cells are present in tissues that are in contact with the body's external environment, such as the skin (where there is a specialized dendritic cell type called the Langerhans cell), and the inner lining of the nose, lungs, stomach and intestines.

Adaptive immune system

The adaptive immune system, also known as the acquired immune system, or specific immune system is a subsystem of the immune system that is composed of specialized, systemic cells and processes that eliminate pathogens or prevent their growth. The acquired immune system is one of the two main immunity strategies found in vertebrates (the other being the innate immune system). Like the innate system, the adaptive immune system includes both humoral immunity components and cell-mediated immunity components and destroys invading pathogens.

Related lectures (33)

Immune Tissue Engineering: Mechanisms and Applications

Explores immune tissue engineering, focusing on cell manipulation, immune cell types, and adaptive immune response levels, highlighting the importance of engineering immune cells for targeted therapies.

Material Engineering in Cancer Immunotherapy

Covers the evasion of immune pressure by tumors, cancer immunotherapies, drug delivery strategies, and the impact of nanoparticle characteristics on tumor penetration.

Immunometabolism: Basic Concepts and Translational Opportunities

Explores the basic concepts and translational opportunities in immunometabolism, emphasizing the intricate interactions between immune cells and different cell types.

Immune System Defense

Explores the immune system's defense mechanisms, including epithelial barriers, innate immunity, adaptive immunity, B and T cells, antibodies, and immunological memory.

Adaptive Immune Response: Steps and Activation MOOC: Introduction to immunology (part 1)