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Related Concept Videos

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...
Reservoir of Infection01:30

Reservoir of Infection

Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
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,...
Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...

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Related Experiment Video

Updated: Jun 4, 2026

Chronic Salmonella Infection Induced Intestinal Fibrosis
08:40

Chronic Salmonella Infection Induced Intestinal Fibrosis

Published on: September 22, 2019

Immunity to salmonellosis.

Gordon Dougan1, Victoria John, Sophie Palmer

  • 1Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK. gd1@sanger.ac.uk

Immunological Reviews
|February 26, 2011
PubMed
Summary
This summary is machine-generated.

Salmonella enterica infections involve complex immune responses. Research in mouse models aids understanding of host genetics and vaccine development for Salmonella.

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Chronic Salmonella Infected Mouse Model
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High-throughput Assay to Phenotype Salmonella enterica Typhimurium Association, Invasion, and Replication in Macrophages

Published on: August 11, 2014

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High-throughput Assay to Phenotype Salmonella enterica Typhimurium Association, Invasion, and Replication in Macrophages
11:10

High-throughput Assay to Phenotype Salmonella enterica Typhimurium Association, Invasion, and Replication in Macrophages

Published on: August 11, 2014

Area of Science:

  • Immunology
  • Microbiology
  • Genetics

Background:

  • Salmonella enterica is a diverse bacterial species causing various infections, from gastroenteritis to typhoid fever.
  • Salmonella exhibits invasive potential, surviving within immune cells and engaging multiple immune system components.
  • Immune responses, including humoral and cellular, are detected, but protective immunity is not consistently achieved.

Purpose of the Study:

  • To explore the complex immune mechanisms underlying Salmonella infections.
  • To investigate the role of host genetics in controlling Salmonella infection.
  • To evaluate the utility of the murine model for studying Salmonella immunity and vaccine efficacy.

Main Methods:

  • Utilizing the murine model to study Salmonella pathogenesis and host immune responses.
  • Conducting host genetic studies to identify key genes involved in infection control.
  • Analyzing both innate and acquired immune pathways in response to Salmonella.

Main Results:

  • Salmonella infections trigger complex host immune responses involving both innate and adaptive immunity.
  • Host genetic factors significantly influence the control of Salmonella infections.
  • The murine model provides valuable insights correlating with human immune responses to Salmonella.

Conclusions:

  • Understanding Salmonella's complex interactions with the immune system is crucial for developing effective control strategies.
  • Host genetic variations play a critical role in determining infection outcomes.
  • Further research, including vaccine development, is essential for combating Salmonella infections effectively.