T-cell repertoire in T-LGL leukemia. In contrast to the healthy T-cell repertoire, T-LGL leukemia patients display markedly less diversity. Although the top 10 CDR3 amino acid sequences are shown for indicated TRBV vs TRJB groupings, the most abundant sequence accounts for 460 213/461 343 (A), 305 120/305 684 (B), and 432 750/436 383 (C).