vertebrate_immune_system_gene_recombination_feature vertebrate_immunoglobulin_T_cell_receptor_segment sequence SO:0000460 I am using the term segment instead of gene here to avoid confusion with the region 'gene'. vertebrate immunoglobulin T cell receptor segment vertebrate_immunoglobulin/T-cell receptor gene Germline genomic DNA with the sequence for a V, D, C, or J portion of an immunoglobulin/T-cell receptor.