Capillary electrophoresis and BioCalculator software analysis plots of clonality PCR done on DNA extracted from original lymphomas and cultured cell lines. All results were reproducible in duplicate or triplicate but only single examples are shown. FR2, Framework 2 (immunoglobulin heavy chain locus); KDE, kappa deleting element (immunoglobulin light chain locus); TCRγ, T cell receptor gamma (T cell receptor gamma chain locus); PC, polyclonal; NA, no amplification.