To delineate the pattern of expression of NKX2-3 during haematopoietic and lymphoid development as well as in lymphoid neoplasms, quantitative real-time–PCR (qRT–PCR) was performed in different FACS-sorted human cell populations and in a collection of B-cell malignancies (Fig. 1f). This evidence concerns the gene NKX2-3 and lymphoid neoplasm.