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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
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Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
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Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex
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Mycobacterium tuberculosis as a model system.

Emilee Barnard1,2, M Maria Elgrail1, Allison Fay1

  • 1Immunology Program, Memorial Sloan Kettering Cancer Center, Sloan Kettering Institute, New York, New York, USA.

Journal of Bacteriology
|March 16, 2026
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Mycobacterium tuberculosis is a model organism for prokaryotic biology and human infection studies. This field exemplifies a community-driven approach to developing new TB therapeutics and diagnostics.

Keywords:
mycobacteriumtuberculosis

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Bacteriology

Background:

  • Mycobacterium tuberculosis (M.tb.) research has significantly advanced over 30 years.
  • The field supports basic mycobacterial studies, pathogenesis research, and therapeutic development.
  • M.tb. serves as a crucial model organism in microbiology.

Purpose of the Study:

  • To highlight M.tb. as a multifaceted model organism.
  • To showcase experimental systems for modeling M.tb. human infection.
  • To present the M.tb. research field as a model for community-driven scientific problem-solving.

Main Methods:

  • Review of M.tb. as a model for prokaryotic biology (gene expression, genomic integrity, mutagenesis).
  • Examination of experimental systems used to model M.tb. human infection.
  • Analysis of community-driven approaches in M.tb. drug and diagnostic development.

Main Results:

  • M.tb. research has expanded fundamental prokaryotic biology dogmas.
  • Diverse experimental systems now effectively model M.tb. pathogenesis in humans.
  • The M.tb. field demonstrates successful academic and public/private partnerships for therapeutic and diagnostic progress.

Conclusions:

  • M.tb. research is a model for advancing prokaryotic biology and understanding human infection.
  • The field exemplifies a productive, community-driven approach to tackling global health challenges.
  • Collaborative efforts in M.tb. research significantly impact tuberculosis treatment and microbial pathogenesis knowledge.