The immune system is a host defense system which comprised by manybiological structures(生物结构)and it processes within anorganism(生物体)that protects against disease. An immune system, if performs properly, must detect a wide variety of agents, known aspathoge...
The cellular part of the immune system can be further distinguished by the receptors used for pathogen recognition. Some cells, designated as innate immune cells, have genetically encoded receptors (pattern recognition receptors [PRRs]) that recognize conserved pathogen structures, so-called pathogen-ass...
The immune system comprises those structures andbiological processwhich defend the organism against aggressions. These may be external (such as pathogenic microorganisms) or internal (such as cancer cells), and the aim is to re-establishhomeostasis(for a general review see Delves and Roitt, 20005)...
Finally, we will describe the primary and secondary structures of the immune system, such as bone marrow, thymus, lymph nodes and spleen, and the migration of immune cells between them.Carlberg, CarstenVelleuer, EunikeLewis DE, Harriman GR. Cells and tissues of the immune system. In: Rich ...
1. The immune system has two levels of immunity – innate and adaptive. The two differs in the components and mechanisms by which they provide protection to the body.2. Innate immunity is provided by structures and cells that exist naturally in our bodies. This form of immunity is NONSPECIFIC...
In this Review, we consider the role of the immune system as the gatekeeper and master regulator of brain–gut and gut–brain communications. Although adaptive immunity (T cells in particular) participates in this process, there is an emerging role for cells of the innate immune compartment (...
Immune system - T Cells, B Cells, Activation: In its lifetime a lymphocyte may or may not come into contact with the antigen it is capable of recognizing, but if it does it can be activated to multiply into a large number of identical cells, called a clo
T-cells attacking a cancer cell. (Image credit: Andrea Danti | Shutterstock) The role of the immune system — a collection of structures and processes within the body — is to protect against disease or other potentially damaging foreign bodies. When functioning properly, the immune system ...
Blood vessel endothelial cells (ECs) have long been known to modulate inflammation by regulating immune cell trafficking, activation status and function. However, whether the heterogeneous EC populations in various tissues and organs differ in their immunomodulatory capacity has received insufficient attentio...
: the monitoring process by which cells of the immune system (such as natural killer cells, cytotoxic T cells, or macrophages) detect and destroy premalignant or malignant cells in the body Scientists believe the immune system culls cells whose genetic machinery has gone haywire; errant cells ...