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Related Concept Videos

Primary Lymphoid Organs01:16

Primary Lymphoid Organs

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...
Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

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...
Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

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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Related Experiment Video

Updated: Jun 17, 2026

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia
10:18

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia

Published on: October 19, 2014

[Grayzone lymphoma. Clinical relevance].

S Hartmann1, M L Hansmann

  • 1Senckenbergisches Institut für Pathologie, Klinikum der Johann-Wolfgang-Goethe-Universität, Theodor-Stern-Kai 7, Frankfurt am Main, Germany.

Der Pathologe
|December 17, 2009
PubMed
Summary
This summary is machine-generated.

Malignant lymphomas require precise classification for accurate diagnosis and treatment. New "gray zone" lymphoma entities were introduced to address diagnostic challenges in aggressive lymphomas, though further research is needed.

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Last Updated: Jun 17, 2026

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia
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Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
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Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

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Area of Science:

  • Hematology
  • Oncology
  • Pathology

Context:

  • Malignant lymphomas are diverse, classified by morphology, immunohistochemistry, and clinical behavior.
  • Accurate classification is crucial as distinct pathogenetic events are linked to specific lymphoma types.
  • Diagnostic challenges arise with overlapping features, especially in aggressive lymphomas, hindering clear entity distinction.

Purpose:

  • To address diagnostic difficulties in classifying certain aggressive lymphomas.
  • To introduce and define new

Summary:

  • The WHO 2008 classification introduced two new gray zone entities for lymphomas with overlapping features.
  • These entities aim to resolve diagnostic ambiguities between specific aggressive lymphoma types.
  • Despite their introduction, these gray zone lymphomas require further study regarding therapy, behavior, and prognosis.

Impact:

  • Improved diagnostic clarity for challenging lymphoma cases.
  • Facilitates targeted research into the unique characteristics of gray zone lymphomas.
  • Supports the ongoing refinement of lymphoma classification systems for better patient outcomes.