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Phenotypic analysis of TCR alpha beta+ CD4+CD8- medullary thymocytes

Phenotypic analysis of TCR alpha beta+ CD4+CD8- medullary thymocytes

Shi Yan Sheng Wu Xue Bao 32(2): 141-149

Phenotypic analysis of the medullary-type CD4+CD8- (CD4SP) thymocytes have revealed phenotypic heterogeneity within these cells. The phenotype of mature peripheral T cells is Qa-2+ HSA- CD69-, whereas in the medullary-type CD4SP thymocytes, the expression pattern of many markers were quite different, suggesting that the medullary-type CD4SP thymocytes may undergo phenotypic maturation. According to the results of two-color cytometry, seven discrete phenotypes were defined by the relative expression of Qa-2, HSA, CD69, 3G11 and 6C10: 3G11-6C10+CD69+HSAhi-->3G11+6C10+CD69+ HSAhi-->3G11+6C10-CD69+HSAint-->3G11+6C10- CD69-HSAint Qa-2(-)-->3G11+HSAlo/-Qa-2lo, at the same time, 3G11+6C10-CD69-HSAint Qa-2(-)-->3G11-HSAlo Qa-2(-)-->3G11-HSAlo/- Qa-2hi, the last two Qa-2 positive subsets could exit the thymus and home into periphery.

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Accession: 046973787

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PMID: 12548779

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