title: [Phenotypic analysis of TCR alpha beta+ CD4+CD8- medullary thymocytes].
abstract: 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.
authors.affiliation: Beijing Medical University, Beijing 100083.
authors.forename: Q
authors.initials: Q
authors.lastname: Ge
authors.forename: W F
authors.initials: WF
authors.lastname: Chen
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000032:analysis; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D005260:Female; D016130:Immunophenotyping; D037181:Lectins, C-Type; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000032:analysis*; D013950:Thymus Gland / Q000166:cytology*; D000099192:CD69 Antigens
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D037181:Lectins, C-Type; D016693:Receptors, Antigen, T-Cell, alpha-beta; D000099192:CD69 Antigens