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T Cell Activation and Clonal Selection

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...

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Related Experiment Video

Updated: Jul 29, 2025

Spontaneous Murine Model of Anaplastic Thyroid Cancer

Spontaneous Murine Model of Anaplastic Thyroid Cancer

Published on: February 3, 2023

An unusual ectopic thymoma clonal evolution analysis: A case report.

Sijia Zhang¹, Lu Wu¹, Zhenyu Li¹

¹Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 156 Wujiadun, Jianghan District, Wuhan, Hubei Province, 430022, China.

Open Life Sciences

|May 22, 2023

Summary

This summary is machine-generated.

This study analyzed the genetic mutations in mediastinal and ectopic pulmonary thymomas. Researchers identified shared gene mutations and differences in tumor heterogeneity, suggesting distinct origins for these rare tumors.

Area of Science:

Oncology
Genomics
Pathology

Background:

Thymomas and thymic carcinomas are rare mediastinal tumors originating from thymic epithelium.

Keywords:

case report clonal evolution ectopic pulmonary thymoma heterogeneity immunohistochemical

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Ectopic thymomas are rarer than typical thymomas and understanding their mutational profiles is crucial for treatment.

This study focuses on a rare case of co-occurring mediastinal and ectopic pulmonary thymoma.