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Related Concept Videos

Primary Lymphoid Organs01:16

Primary Lymphoid Organs

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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
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Secondary Lymphoid Organs01:15

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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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Lymphoid Cells and Tissues01:18

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
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Cells of the Adaptive Immune Response01:23

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Functions of the Lymphatic and Immune System01:28

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The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
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Cervical Lymph Duct-Cannulated Rat Model for Assessing Lymphatic Transport from the Head and Brain
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Primary CNS lymphoma.

Valerie Touitou1, Phuc LeHoang, Bahram Bodaghi

  • 1aOphthalmology Department, DHU View Restore, Pitie-Salpetriere Hospital bUniversité Pierre et Marie Curie (UPMC), Paris, France.

Current Opinion in Ophthalmology
|September 15, 2015
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Summary
This summary is machine-generated.

Diagnosing primary CNS lymphoma (PCNSL) is challenging, often delayed. Cytology, molecular analysis, and intraocular cytokine levels like IL-10 aid diagnosis and monitoring of this rare lymphoma.

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Flow Cytometric Analysis of Lymphocyte Infiltration in Central Nervous System during Experimental Autoimmune Encephalomyelitis
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Area of Science:

  • Ophthalmology
  • Neurology
  • Oncology

Background:

  • Primary CNS lymphoma (PCNSL) diagnosis is often delayed, impacting patient prognosis.
  • Current treatment strategies for PCNSL are debated.
  • PCNSL requires high clinical suspicion, particularly in older patients with chronic posterior uveitis.

Purpose of the Study:

  • To review recent advancements in PCNSL diagnosis.
  • To discuss current therapeutic options and future directions for PCNSL management.

Main Methods:

  • Analysis of vitreous samples for cytology and molecular clonality.
  • Measurement of intraocular interleukin (IL)-10 levels for screening.
  • Evaluation of intraocular cytokine profiles for therapeutic response monitoring.

Main Results:

  • Cytology and molecular analysis of vitreous samples are crucial for definitive PCNSL diagnosis.
  • Intraocular IL-10 levels serve as a valuable screening tool for suspected primary vitreoretinal lymphoma.
  • Intraocular cytokine dosage may indicate therapeutic response in PCNSL patients.

Conclusions:

  • PCNSL diagnosis remains challenging, relying on clinical suspicion, ocular fluid analysis (IL-10, IL-6), cytology, and molecular clonality.
  • New diagnostic and prognostic markers are under investigation.
  • The optimal treatment strategy for isolated vitreoretinal lymphoma (local vs. systemic) is controversial.