pro-t lymphocyte clones , which have the t cell receptor ( tcr ) alpha , beta , gamma and delta genes in germline configuration and heterogeneous t cell precursors freshly isolated from bone marrow of athymic nude mice , gave rise to single positive l3t4+ tcr alpha , beta+ and double negative ( l3t4-lyt2- ) tcr alpha , beta+ or tcr gamma , delta+ cells , but not to any cells expressing lyt2 , when co-cultured with the thymic epithelial clone et .
C0087048
t cell receptor
C0085247
tcr alpha , beta