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Related Concept Videos

Development of Immunocompetence01:22

Development of Immunocompetence

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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Cold Weather Concreting01:27

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When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
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Cable Subjected to Its Own Weight01:13

Cable Subjected to Its Own Weight

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Overhead power transmission lines rely on cables to carry electricity across large distances. To ensure the stability and functionality of these lines, it is crucial to understand the shape and tension experienced by the cables under the influence of their weight.
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Masonry in Cold and Hot Weather Conditions01:21

Masonry in Cold and Hot Weather Conditions

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In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
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Cable Subjected to Concentrated Loads01:28

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Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
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Preparation of Agar Bead Embedded Mycobacterium abscessus to Inoculate Immunocompetent Mice Intratracheally
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Cold abscess in the immunocompetent subject.

Soumaya Ben Saad, Nesrine Kallel, Houda Gharsalli

    La Tunisie Medicale
    |November 16, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Tuberculous cold abscesses are rare extrapulmonary tuberculosis (TB) manifestations. Early diagnosis and treatment of these collections are crucial for a successful cure and preventing complications.

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    Area of Science:

    • Infectious Diseases
    • Pulmonology
    • Radiology

    Background:

    • Tuberculous cold abscesses represent a rare (<1%) form of extrapulmonary tuberculosis (TB).
    • These collections often present insidiously with chronic pain or swelling, sometimes leading to fistulization.
    • Diagnosis can be challenging due to non-specific symptoms and absence of fever in many cases.

    Purpose of the Study:

    • To delineate the clinical, diagnostic, therapeutic, and prognostic features of tuberculous cold abscesses.
    • To highlight the importance of considering TB in the differential diagnosis of chronic collections.
    • To emphasize the role of early intervention in patient outcomes.

    Main Methods:

    • Retrospective multicenter study involving 24 patients diagnosed with tuberculous cold abscesses.
    • Data collection spanned from 2009 to 2017, focusing on clinical presentation, diagnostic methods, treatment, and patient evolution.
    • Diagnostic confirmation involved pathological and bacteriological analyses, including GeneXpert testing.

    Main Results:

    • The mean age of patients was 36.9 years, with a history of pulmonary TB in 33% of cases.
    • Thoracic wall localization was most common (n=13), followed by subcutaneous/intramuscular sites (n=6).
    • Twenty patients achieved cure with anti-tuberculosis treatment, with one documented relapse.

    Conclusions:

    • Tuberculous cold abscesses should be suspected in patients with chronic collections, particularly those with TB risk factors.
    • Prompt diagnosis and initiation of anti-tuberculosis therapy are key to achieving favorable outcomes and avoiding complications.
    • This study underscores the need for a high index of suspicion for TB in unexplained chronic abscesses.