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Related Concept Videos

Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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.
Mode of...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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...
Toxoplasmosis01:28

Toxoplasmosis

Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...

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Related Experiment Video

Updated: Jul 15, 2026

Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates
04:40

Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates

Published on: October 4, 2024

Johne's Disease (Paratuberculosis) in a Goat.

C L Moser

    The Canadian Veterinary Journal = La Revue Veterinaire Canadienne
    |February 1, 1982
    PubMed
    Summary

    Johne

    Area of Science:

    • Veterinary Pathology
    • Infectious Diseases

    Background:

    • Johne's disease (paratuberculosis) is a chronic infectious enteritis.
    • It affects ruminants, causing significant economic losses.
    • Diagnosis and control in small ruminants present unique challenges.

    Purpose of the Study:

    • To report a case of Johne's disease in a Saanen doe.
    • To highlight diagnostic and control difficulties in small ruminants.

    Main Methods:

    • Clinical diagnosis based on chronic weight loss and diarrhea.
    • Necropsy confirmed granulomatous enteritis, lymphadenitis, and lymphangitis.
    • Microscopic examination of intestinal mucosa revealed acid-fast organisms.

    Main Results:

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    Catheterization of Intestinal Loops in Ruminants
    17:15

    Catheterization of Intestinal Loops in Ruminants

    Published on: June 11, 2009

    Related Experiment Videos

    Last Updated: Jul 15, 2026

    Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates
    04:40

    Demonstration of Membrane Transport of Histidine using Goat Intestinal Inverted Sacs: An Experiential Pedagogical Tool for Undergraduates

    Published on: October 4, 2024

    Catheterization of Intestinal Loops in Ruminants
    17:15

    Catheterization of Intestinal Loops in Ruminants

    Published on: June 11, 2009

  • Johne's disease was confirmed as the cause of illness.
  • Abundant acid-fast organisms were identified in macrophages.
  • The case illustrates typical pathological findings.

    • Conclusions:

    • Johne's disease diagnosis requires careful pathological and microbiological evaluation.
    • Effective control strategies are crucial for small ruminant herds.
    • Further research into small ruminant paratuberculosis is warranted.